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Topics - Shoelayceberry the [Unlaced]

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General Discussion / Need home buying advice - fairly quick
« on: May 03, 2016, 03:34:53 PM »
Currently rent in an area where I might be able to afford a mortgage if I had the down payment. I don't have a down payment. We're still a couple years or more away from a down payment. In San Diego a starter, run down, shithole, home starts around $350K. The area we are in starts at 400, with an average closer to 450-550. Our commutes are very easy now (20-30 max). Most places where we would start to look would bump that to ~1 hour each, while only being about 10 miles more.

Our landlord has been great about keeping the rent very low for the area, but has 5 kids, some approaching college age. He is ready to list. He hinted at it a couple months back, but he contacted us directly - skipping the management company - to ask us if we would be interested. He even mentioned that he knew we are about to have a kid, but if at all interested, we might be able to make a better deal/price; he did not mention a price. He'd like to know if we are at least interested by tomorrow.

What do I need think about? What is a no-go or worst choice scenario, mortgage-wise; are variable rate mortgages worth it, and how would I calculate it for myself - roughly. I've been told that taking anything from your retirement is fucking dumb, T/F?

All I can think of right now, work is killing me at this exact moment. Please post whatever I need to know/research and I'll take a look. Thanks.

Tech Heads / User data backups on workstations/laptops
« on: March 30, 2016, 05:02:37 PM »
Any suggestions? I've got 128TB of unused space to dump to, if needed; provided by a CoLo as a simple Samba share. It doesn't need to be spectacular. I am trying to mitigate our eventual Ransomware infection. I've got plans to lock down file shares a bit more, to wall off spillover. We already backup all Server, /home, and project areas with our Enterprise product (NetBackup), but I'd like to save the day on user machines when it happen again. This will not be for use of stupid user errors. This is strictly a failsafe, DR recover option.

General Discussion / Pantheon
« on: March 15, 2016, 11:42:41 PM »
They did a pre-alpha play through on twitch yesterday:

At the 1:35:00-ish mark, they wipe and get trained.  :ok:

General Discussion / The Shannara Chronicles
« on: January 04, 2016, 03:29:11 PM »
Check it out. Starts tomorrow.

No idea if it's any good. Home sick today and saw a preview on a channel I never go to. Didn't see any listing here, so there you go. Read Elfstones of Shannara as a kid, but couldn't slog through Sword of Shannara.

General Discussion / Anyone at AWS re:Invent ?
« on: October 07, 2015, 11:12:21 AM »
Probably not but let's grab a beer. I know there's a Riot contingency here but I can't sit in on their talk. Competes with something I need to see more. Good luck.

Sent from my iPhone using Tapatalk

Tech Heads / Storage Administration question
« on: September 03, 2015, 02:35:46 PM »
I am woefully unprepared to administer storage, but then again I think it's an easier topic to learn about. Questions:

1) I am in a situation where I need to backup an internal CIFS share (preserving all windows ACLs), disk-to-disk, to what is essentially another storage area, outside our network, at a CoLo; CoLo in this case is actually a University that we have free rack space at, that is also playing the role of ISP. They are asking for a UID from the system I will use to access the share. This is a Windows machine, so what are they really asking for?

2) As long as this is CIFS to CIFS, even though this is not within our domain, the ACLs will persist as meta data during the copy, right?

3) What's a good place to start/continue reading about storage and best practice, including backup topics?   

Tech Heads / Interviews
« on: July 28, 2015, 02:38:06 PM »
Not me - gotcha!  :angel:

So, they have finally conceded to the request for additional support staff here. They have opened several positions actually, but the one I'm most interested in is the Sys Admin I position that will report to me. This will free me up to stop having to do the majority of helpdesk tasks I have to do. I have also been greenlit to take the first VMware 6 install course and I may be able to get a seat at AWS re:Invent in Vegas. For some reason, in the last week, things have gone dead quiet, so I have picked back up on SQL and IIS studies, as implemented in my Altiris 7.6 deployment. With this exposure, I feel like I will have a much better understanding of enterprise apps in the next month or two.

So, on topic:

How do you run a phone interview? How do you run an onsite interview? If you've done neither, what are some things you have seen or experienced and how did that affect your view of the company/job?

Tech Heads / CA infrastructure and and usage
« on: May 24, 2015, 01:27:37 PM »
Cisco LIVE 2015 in 2 weeks, so still studying to re-certify. The next thing I need to feel confident on is Certificates. This is one of those topics I understand while being taught, but quickly forget as I go about my other work. After a good network design, and DNS implementation, I think certs are rapidly becoming the next most important topic for admins to understand above all else, fueled by flight to the public cloud, if nothing else.

We have our own internal CA and I am scared to deal with it. What are some good videos or readings I can do to feel more confident? Also, what are good methods for tracking expiration of your internal certs?

Tech Heads / AWS usage
« on: March 25, 2015, 11:26:22 PM »
What are the basics? Any tips? Any good videos for learning?

Tech Heads / Cisco Certs - Torrack or anyone
« on: March 15, 2015, 03:19:59 PM »
If you've read any other posts from me lately, you know that I think our 2 site Org is probably going to lose one site by EOY; not mine. There are just two of us on my coast, and the other guy is a 3rd year SysAdmin I who isn't really pushing himself; he has made some strides in the last year, but I still need to double check on everything he does beyond the basics. So, we will literally lose all organizational knowledge, beyond what I know. I am fully capable of running/moving our Windows and Mac infrastructure, but we're a biotech research non-profit. We will need to know at least some Linux and Networking, depending on how much we move to the cloud or CoLo.

My CCNA runs out in June, but luckily I have a ticket to CiscoLIVE 2015 San Diego, so I have options for re-cert. While I used to do basic port activations and VLAN switches in our old building, I have yet to get access to our routers/switches here, since moving in Dec 2013. This was mostly because the 6 months we were supposed to get access to the building before the move, became 2 weeks, so things were a steaming pile'o'shit for a while, as we fire drilled our way to functionality. They also needed to do some RADIUS upgrades/changes, which are almost done. The point being that I haven't had daily knowledge/practice of routing/switching in over a year, and even though we have brand new Nexus equipment in our Closets, the knowledge that I did have was from old IOS and Catalyst switches.

With the knowledge that I inherited a (non-recognized/paid) Lead Windows Admin role, due to our Senior Admin quitting in August last year, I have old experience on old equipment, and there is currently a mad flight to push what we can to CoLo's or the cloud eating up time and effort in addition to the daily helpdesk work I am still required to do, I have to ask the question:

Which cert is the easiest to pass to maintain my CCNA: Voice, Wireless, R&S, or Security.

While I have the equivalent to R&S from my v1.1 cert, that was a fucking hard test, though I admit that's because I really am not a Network Engineer. I would say I am a CCENT+; not quite ready to run a full Cisco network, but I could get going in a hurry if I needed to. I have a little experience with older Call Manager and Unity for setting up phones and voicemail for all users, though just enough to do my tasks. I know a little wireless that a motivated home tech would know; frequencies, channels, etc., plus whatever Windows networking you could learn for the MCITP: Enterprise Admin; failed a couple tests by one question, but could go back now and pass for sure with some studying. I also am in charge of our Symantec Endpoint Protection services from a Security standpoint.

So, I know just enough to wreck a Network across multiple systems and though there is almost 4 full months to study, I don't have a lot of spare time at all - what would you recommend I shoot for?

Tech Heads / Permissions Management
« on: February 16, 2015, 03:11:49 PM »
Next up, we have our storage upgrade/migration going this month. In order to reduce some complexity, we are moving from older systems on NetApp, Isilon, and Sun, to just NetApp and Isilon. NetApp will run all performance required roles (grid and VMware infrastructure) and Isilon will handle the generic file server role.

Apparently, the move of our home areas to their new location on Isilon will destroy all NTFS permissions, while maintaining UNIX presmissions. It was handed off to me due to my growing skill with PowerShell. At first blush, I figured it would be easy to just back up, then reapply. Of the ~1000 home directories, ~200 errored out. I got piled under other work and still haven't figured out why it errored. At this point, I just need to solve the problem for the majority, then figure out why the the ~200 fail.

As I put more work on it, it seems like it may be harder than I expected. The migration happens next weekend whether I am ready or not. I knew of its existence before, but I ran across icacls.exe today.

The questions is, ever done this? Do you have a preference, and if so, why?

Tech Heads / Exchange Admins?
« on: January 20, 2015, 04:57:40 PM »
Long shot, but looking for some guidance. Maintenance/recovery question...

We will eventually migrate off of this, to Office 365, but in the meantime I have inherited an Exchange 2007 environment, with 2 Hub/CAS servers in an NLB, and a CCR Failover Cluster. All server OSes are Server 2008. All servers are running all latest patches and Exchange rollups. We have 25 Storage Groups, each containing a single DB. On the Mailbox server cluster, we have separate filesystems for logs and DBs. This is all virtual in VMware 5.0 (very behind here too).

The admin I inherited this from had started a test phase with O365 by setting up a 3rd Hub/CAS server with Exchange 2010 (Server 2008 R2, patched and Exchange rollups all the way).

Everything is running great with Exchange. The problem is our backup software (Netbackup) is out of date and backup hardware is taxed. So, the occasional backup fails. This causes our log drive to fill, causing Exchange to stop sending mail. We had no monitoring solution that I know of, so during the last couple of months, I have been documenting everything (for my own sake, to learn how everything works) and getting these upgrades done, including getting PowerShell v2 on all nodes. This all should be finished in the next couple of days. My plan is to setup a repeating PowerShell script to monitor drive fullness that will email me nightly, and my boss weekly; eventually this (or similar) will be deployed to all critical servers. 2 Things:

1) What else should I be doing? I had just taken a class early last year, for Exchange 2013, but that has been little help in a production environment of 2007; almost everything has changed. I have mostly read an Exchange 2007 book, so along with my 2013 reading, I have a feel for how everything should work. I expanded on that with the documentation, which we had 0 of, so that I know all points of failure. Still needing to trace mail flow from OWA (and other web services), as I think that may be hosted on the "new" 2010 box as there was recently a disruption after my boss patched it; (re)starting some services on that box brought everything back online.

2) CCR Failover Cluster. What is the proper way to recover from our full log drive? It seems we have to reseed the passive node every time we recover. I think we may be causing that ourselves. Current steps are:

a) Dismount-Database -Identity dbname
b) eseutil /mh "path_to_db.edb"
c) assumung state = clean shutdown, delete all logs on largest Storage Groups\DBs  <THIS MIGHT BE POTENTIAL SPOT OF FAILURE>
d) Mount-Database -Identity dbname

DBs come back healthy, but CCR maintains an initializing state for as long as we let it, then we reseed (Update-StorageGroupCopy -Identity dbname) which eventually gets everyone back in a happy copy state, in case of failover.

Since I inherited my new role back in ~August last year, I have been in a state of perpetual fear and failure making life in-general stressful. I am happy that I have my new responsibilities, as I know after I master this I will have experience with all major Windows Enterprise technologies: NLBs, Failover Clusters, Exchange Support, IIS, Basic Database work (I have another project I was working on requiring MS SQL, but that has been on the backburner due to this), but it has been a bad way to learn - maybe this is how everyone does it? Anyway, I have been pretty burnt out for about a year now, due to previous posts I have made about moving buildings, so once this gets handled in a way that I am happy with, I can relax a bit, then pick back up on my other task and learn some SQL.

Any help would be appreciated. Thanks.

General Discussion / [SCIENCE!] Back to tachyons = Neutrinos ?
« on: January 03, 2015, 02:14:51 PM »
Possibly with imaginary mass. Multiple links in original article.

How To Find Faster-Than-Light Particles

December 27, 2014 | by Stephen Luntz
Photo credit: Sumanch via wikimedia commons. A faster than light particle would be invisible as it approached, but be seen in both directions after it passed

A new paper claims to demonstrate that neutrinos not only travel faster than the speed of light, but have the brain-twisting characteristic of “imaginary mass”, a property that means they actually speed up as they lose energy.

The phrase “extraordinary claims require extraordinary proof” has seldom been more appropriate, but Professor Robert Ehrlich, recently retired from George Mason University, believes he has that, with six different measurements from different areas of physics. All of these, Ehrlich claims in Astroparticle Physics, provide matching results that not only indicate that neutrinos have imaginary mass, but point towards the same value, making it less likely the readings are in error.

While the mere idea of imaginary mass sounds improbable to the non-physicist, it is a concept theoreticians have been tinkering with for some time. While imaginary numbers represent the square root of negative numbers, and have proven exceptionally valuable tools for physics, imaginary mass squared gives a negative mass value.

This just makes the concept sound even more improbable, but the idea actually falls fairly neatly out of the theory of Special Relativity. One of Einstein's key discoveries was the realisation that, for ordinary matter, mass increases with velocity. The formula is m2=m2rest/(1-(v/c)2) where m is mass, v is velocity and c is the speed of light.

The conclusion that faster than the speed of light is impossible comes from the fact that, for an object with mass, traveling at the speed of light would make that mass infinite. Unless someone can work out how to get from traveling slower than light to faster than light without going through the speed of light it appears we are stuck with exploring the universe at a painfully slow pace.

However, in 1962 George Sudarshan pointed out that nothing in relativity theory prevented the possibility of particles that always travel faster than the speed of light. For these objects, dubbed tachyons, light speed would be a floor, not a ceiling.

This raised the question as to whether, if tachyons exist, we would be able to detect them. In 1985 it was suggested that neutrinos are actually tachyons. Most physicists paid little attention and went back to arguing about whether neutrinos have mass and travel slower than light, or are massless objects traveling at lightspeed. However, the claim has resurfaced several times since, most famously in the erroneous timing of neutrinos from Geneva to central Italy.

Ehrlich uses results from “Cosmic Microwave Background fluctuations, gravitational lensing, cosmic ray spectra, neutrino oscillations, and double beta decay.” From these he arrives at a mass that, besides its imaginary status, is less than a millionth that of an electron (m2νe=−0.11±0.016eV2), consistent with a speed only slightly above that of light.

Moreover, Ehrlich claims, “There are no known observations in clear conflict with the claimed result.” He also suggests three further tests that could be conducted to verify or disprove his conclusion, one of which is set to occur in 2015.

General Discussion / Hyperloop developments
« on: December 21, 2014, 08:43:01 PM »
 :nerdglasses: See article for cool graphics.

These Dreamers Are Actually Making Progress Building Elon’s Hyperloop
By Alex Davies 
12.18.14  |  1:10 pm

When Elon Musk unveiled his idea for the Hyperloop in August of 2013, no one seemed sure what the next step would be. The Tesla Motors and SpaceX CEO dropped a 57-page alpha white paper on us, noting he didn’t really have the time to build a revolutionary transit system that would shoot pods full of people around the country in above-ground tubes at 800 mph.

Fortunately for futurists and people who enjoy picking apart complicated plans, an El Segundo, California-based startup has taken Musk up on his challenge to develop and build the Hyperloop. JumpStartFund combines elements of crowdfunding and crowd-sourcing—bringing money and ideas in from all over the place—to take ambitious ideas and move them toward reality.

When Musk proposed his idea, JumpStartFund was fresh off its beta launch, and taking on the Hyperloop seemed like the perfect way to test the company’s approach (and drum up headlines), says CEO Dirk Ahlborn. So they reached out to SpaceX, proposed the project on their online platform, and created a subsidiary company to get to work: Hyperloop Transportation Technologies, Inc.

The incorporated entity has a fancy name and all, but it’s less a standard company than a group of about 100 engineers all over the country who spend their free time spitballing ideas in exchange for stock options. That said, this isn’t a Subreddit trying to solve the Boston Marathon bombing. These gals and guys applied for the right to work on the project (another 100 or so were rejected) and nearly all of them have day jobs at companies like Boeing, NASA, Yahoo!, Airbus, SpaceX, and Salesforce. They’re smart. And they’re organized.

The team is split into working groups, based on their interests and skills, that cover various aspects of the massive project, including route planning, capsule design, and cost analysis. They work mostly over email, with weekly discussions of their progress. Hierarchy is minimal, but leaders have naturally emerged, says Ahlborn. And if a decision needs to be made, as CEO, he makes the call.

A lot of the work is being done by 25 UCLA students. The school’s SUPRASTUDIO design and architecture program partnered with JumpStartFund, and now the students are working on all the design solutions the new transit system would require.

Ahlborn doesn’t expect to have the technical feasibility study finished until mid-2015, but he decided to show off what his team has done so far to coincide with the midterm break of the design group at UCLA. So far, the team has made progress in three main areas: the capsules, the stations, and the route.

Here’s what we know so far about the Hyperloop JumpStartFund wants to build.
The Route

The group working on finding a suitable route used algorithms that account for things like existing buildings, roads, and geography, and optimize the path for speed and comfort. That means keeping the line as straight as possible. Like in a plane, high speeds alone don’t lead to nausea, but if you start turning, you feel the g-forces. The route won’t be completely smooth, Ahlborn says, but contrary to the claim of one transportation blogger, “I don’t think it’s a barf ride.”

Musk’s proposed Hyperloop route running from San Francisco to Los Angeles came under a lot of criticism: What about earthquakes? Right of way? Crossing the San Francisco Bay? How will you avoid the political struggles that have made the region’s in-development high-speed rail system something of a punch line? Ahlborn has the answer: Pick a different route. Los Angeles to Las Vegas is being considered, as are other parts of the US and the world. “We would love to see LA to San Francisco, but our primary goal is to build the Hyperloop.” Yes, there are political hurdles. But not everywhere. Not in Dubai.

The UCLA students working on potential routes imagine networks criss-crossing the country, as well as Europe and Asia. This is where things get fanciful: we’re at least 10 years away from a commercially viable Hyperloop, and the idea of a national network is hard to imagine. They tacked on the idea of a “Mini Hyperloop,” which would offer shorter routes into and around cities.

The Capsules

The team had to make a few changes to the capsules Musk proposed. The Tesla CEO suggested doors that would open upward, but Ahlborn says that’s hard to do, since the low-pressure environment of the tube requires fairly heavy doors. So the team decided on what it calls a “bubble strategy.” There’s the swanky capsule, the one with fancy doors and windows, that pulls into the station. It’s the “bubble.” Passengers get in, and that capsule enters an outer shell as it’s loaded into the tube. The outer shell is built to handle the ride, and has the air compressor and other needed bits.

Don’t expect the Hyperloop to end the struggle between the bourgeoisie and proletariat: in addition to capsules made for freight, there will be economy class, and a roomier business class.

The Stations

As the UCLA students imagine it, a passenger would arrive at a station and drop her luggage off with a Kiva robot (the kind Amazon uses in its warehouse). She would pass through security on what seems to be a moving sidewalk going under a metal detector, an idea that sounds tricky when you consider how often people in airports forget to take coins or various terrifying objects out of their pockets. But once through, she would be able to kill time in the lobby doing some shopping, grabbing a bite, using the bathroom, or renting a tablet for the trip. Then she heads to her platform, gets in her assigned seat, and is whisked away.

The Hyperloop would be made of two stacked tubes, in which the capsules travel in opposite directions. When a capsule reaches a station, the bubble slides out sideways and onto the platform, and the passengers unload. Then the capsule is moved to the opposite tube and ready to get going again.
What Remains to Be Done

So JumpStartFund and the UCLA students have made good progress, but there’s a lot to figure out before anyone gets to tackle the really fun parts like testing, permitting, and construction. Ahlborn says the questions of how to build the low-pressure tube and the pylons that support it have mostly been solved, and creating the capsules shouldn’t be too tricky. The hard part is moving the capsules within the tube, and seeing how fast they can go. To eliminate friction in the tube, Musk proposed using a compressor to create a pocket of air under the capsule. That’s the cheapest approach, Ahlborn says, but it has its drawbacks. His team is looking at the possibility of using magnetic levitation and other alternatives. “We want to find the best possible way to make this work.”

“I have almost no doubt that once we are finished, once we know how we are going to build and it makes economical sense, that we will get the funds,” Ahlborn says, and Musk’s cost estimate of $6-10 billion for a 400-mile stretch of Hyperloop is on point, based on the team’s work.

Considering the nonsense that’s getting venture capital these days, that’s not a crazy thing to say, though it will require unusually patient investors. Ahlborn expects to start building the first in a series of prototypes sometime in 2015. A final product “can be built within the decade,” Ahlborn says. “That’s for sure.”

At some point, Hyperloop Transportation Technologies will likely have to shift from this work-when-you-can-but-don’t-expect-money model to something a bit more conventional with, you know, employees. But for now, it’s a fitting approach: Bring in as many minds as possible to sort through the myriad questions an idea this ambitious presents. This is why Ahlborn’s excited about the Hyperloop: It’s a huge undertaking. That’s why people like Elon Musk, he says: The dude wants to die on Mars and he’s actually moving toward the awesome, if macabre, goal. “Other people work on their next app.”

General Discussion / Foo Fighters: Sonic Highway
« on: October 25, 2014, 02:03:30 AM »
Documentary series on HBO. If you're a fan of Rock, in general, it's very much worth a look. Very cool juxtaposition of art, music, real-life-stories, and location. Each week they go to a different city. So far, Chicago and Wash DC. For each city, they cover the music scene from its roots, then tie it in to some one in the band, then finish with a song from the new album, where they show the lyrics on-screen and you see how the song relates to everything you just learned. Chicago had a lot of blues in it. DC just had a lot of the DC Punk scene; Dave Grohl grew up there. Next week is Nashville. Curious how it will tie in, but I'm hooked already.

General Discussion / Fermi Paradox breakdown
« on: August 17, 2014, 05:25:36 PM »
Click the link. It's prettier.

The Fermi Paradox: Where the Hell Are the Other Earths?
Tim Urban -
Filed to: space   


5/23/14 11:20am

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The Fermi Paradox: Where the Hell Are the Other Earths?Expand

Everyone feels something when they're in a really good starry place a really good starry place on a really good starry night and they look up and see this:

The Fermi Paradox: Where the Hell Are the Other Earths?Expand

Some people stick with the traditional, feeling struck by the epic beauty or blown away by the insane scale of the universe. Personally, I go for the old "existential meltdown followed by acting weird for the next half hour." But everyone feels something.

Physicist Enrico Fermi felt something too—"Where is everybody?"

A really starry sky seems vast—but all we're looking at is our very local neighborhood. On the very best nights, we can see up to about 2,500 stars (roughly one hundred-millionth of the stars in our galaxy), and almost all of them are less than 1,000 light years away from us (or 1% of the diameter of the Milky Way). So what we're really looking at is this:

The Fermi Paradox: Where the Hell Are the Other Earths?Expand

When confronted with the topic of stars and galaxies, a question that tantalizes most humans is, "Is there other intelligent life out there?" Let's put some numbers to it (if you don't like numbers, just read the bold)—

As many stars as there are in our galaxy (100 – 400 billion), there are roughly an equal number of galaxies in the observable universe—so for every star in the colossal Milky Way, there's a whole galaxy out there. All together, that comes out to the typically quoted range of between 10^22 and 10^24 total stars in the universe, which means that for every grain of sand on Earth, there are 10,000 stars out there.

The science world isn't in total agreement about what percentage of those stars are "sun-like" (similar to our sun in size, temperature, and luminosity)—opinions typically range from 5% to 20%. Going with the most conservative side of that (5%), and the lower end for the number of total stars (10^22), gives us 500 quintillion, or 500 billion billion sun-like stars.

There's also a debate over what percentage of those sun-like stars might be orbited by an Earth-like planet (one with similar temperature conditions that could have liquid water and potentially support life similar to that on Earth). Some say it's as high as 50%, but let's go with the more conservative 22% that came out of a recent PNAS study. That suggests that there's a potentially-habitable Earth-like planet orbiting at least 1% of the total stars in the universe—a total of 100 billion billion Earth-like planets.

So there are 100 Earth-like planets for every grain of sand in the world. Think about that next time you're on the beach.

Moving forward, we have no choice but to get completely speculative. Let's imagine that after billions of years in existence, 1% of Earth-like planets develop life (if that's true, every grain of sand would represent one planet with life on it). And imagine that on 1% of those planets, the life advances to an intelligent level like it did here on Earth. That would mean there were 10 quadrillion, or 10 million billion intelligent civilizations in the observable universe.

Moving back to just our galaxy, and doing the same math on the lowest estimate for stars in the Milky Way (100 billion), we'd estimate that there are 1 billion Earth-like planets and 100,000 intelligent civilizations in our galaxy. (The Drake Equation provides a formal method for this narrowing-down process we're doing.)

SETI (Search for Extraterrestrial Intelligence) is an organization dedicated to listening for signals from other intelligent life. If we're right that there are 100,000 or more intelligent civilizations in our galaxy, and even a fraction of them are sending out radio waves or laser beams or other modes of attempting to contact others, shouldn't SETI's satellite array pick up all kinds of signals?

But it hasn't. Not one. Ever.

Where is everybody?

It gets stranger. Our sun is relatively young in the lifespan of the universe. There are far older stars with far older Earth-like planets, which should in theory mean far more advanced civilizations than our own. As an example, let's compare our 4.54 billion-year-old Earth to a hypothetical 8 billion-year-old Planet X.

The Fermi Paradox: Where the Hell Are the Other Earths?Expand

If Planet X has a similar story to Earth, let's look at where their civilization would be today:

The Fermi Paradox: Where the Hell Are the Other Earths?Expand

The technology and knowledge of a civilization only 1,000 years ahead of us could be as shocking to us as our world would be to a medieval person. A civilization 1 million years ahead of us might be as incomprehensible to us as human culture is to chimpanzees. And Planet X is 3.4 billion years ahead of us…

There's something called The Kardashev Scale, which helps us group intelligent civilizations into three broad categories by the amount of energy they use:

A Type I Civilization has the ability to use all of the energy on their planet. We're not quite a Type I Civilization, but we're close (Carl Sagan created a formula for this scale which puts us at a Type 0.7 Civilization).

A Type II Civilization can harness all of the energy of their host star. Our feeble Type I brains can hardly imagine how someone would do this, but we've tried our best, imagining things like a Dyson Sphere.

The Fermi Paradox: Where the Hell Are the Other Earths?Expand

A Type III Civilization blows the other two away, accessing power comparable to that of the entire Milky Way galaxy.

If this level of advancement sounds hard to believe, remember Planet X above and their 3.4 billion years of further development (about half a million times as long as the human race has been around). If a civilization on Planet X were similar to ours and were able to survive all the way to Type III level, the natural assumption is that they'd probably have mastered inter-stellar travel by now, possibly even colonizing the entire galaxy.

One hypothesis as to how galactic colonization could happen is by creating machinery that can travel to other planets, spend 500 years or so self-replicating using the raw materials on their new planet, and then send two replicas off to do the same thing. Even without traveling anywhere near the speed of light, this process would colonize the whole galaxy in 3.75 million years, a relative blink of an eye when talking in the scale of billions of years:

The Fermi Paradox: Where the Hell Are the Other Earths?Expand

Source: J. Schombert, U. Oregon

Continuing to speculate, if 1% of intelligent life survives long enough to become a potentially galaxy-colonizing Type III Civilization, our calculations above suggest that there should be at least 1,000 Type III Civilizations in our galaxy alone—and given the power of such a civilization, their presence would likely be pretty noticeable. And yet, we see nothing, hear nothing, and we're visited by no one.
So where is everybody?

Welcome to the Fermi Paradox.

We have no answer to the Fermi Paradox—the best we can do is "possible explanations." And if you ask ten different scientists what their hunch is about the correct one, you'll get ten different answers. You know when you hear about humans of the past debating whether the Earth was round or if the sun revolved around the Earth or thinking that lightning happened because of Zeus, and they seem so primitive and in the dark? That's about where we are with this topic.

In taking a look at some of the most-discussed possible explanations for the Fermi Paradox, let's divide them into two broad categories—those explanations which assume that there's no sign of Type II and Type III Civilizations because there arenone of them out there, and those which assume they're out there and we're not seeing or hearing anything for other reasons:

Explanation Group 1: There are no signs of higher (Type II and III) civilizations because there are no higher civilizations in existence.

Those who subscribe to Group 1 explanations point to something called the non-exclusivity problem, which rebuffs any theory that says, "There are higher civilizations, but none of them have made any kind of contact with us because they all _____." Group 1 people look at the math, which says there should be so many thousands (or millions) of higher civilizations, that at least one of them would be an exception to the rule. Even if a theory held for 99.99% of higher civilizations, the other .001% would behave differently and we'd become aware of their existence.

Therefore, say Group 1 explanations, it must be that there are no super-advanced civilizations. And since the math suggests that there are thousands of them just in our own galaxy, something else must be going on.

This something else is called The Great Filter.

The Great Filter theory says that at some point from pre-life to Type III intelligence, there's a wall that all or nearly all attempts at life hit. There's some stage in that long evolutionary process that is extremely unlikely or impossible for life to get beyond. That stage is The Great Filter.

The Fermi Paradox: Where the Hell Are the Other Earths?Expand

If this theory is true, the big question is, Where in the timeline does the Great Filter occur?

It turns out that when it comes to the fate of humankind, this question is very important. Depending on where The Great Filter occurs, we're left with three possible realities: We're rare, we're first, or we're fucked.

1. We're Rare (The Great Filter is Behind Us)

One hope we have is that The Great Filter is behind us—we managed to surpass it, which would mean it's extremely rare for life to make it to our level of intelligence. The diagram below shows only two species making it past, and we're one of them.

The Fermi Paradox: Where the Hell Are the Other Earths?Expand

This scenario would explain why there are no Type III Civilizations…but it would also mean that we could be one of the few exceptions now that we've made it this far. It would mean we have hope. On the surface, this sounds a bit like people 500 years ago suggesting that the Earth is the center of the universe—it implies that we'respecial. However, something scientists call "observation selection effect" says that anyone who is pondering their own rarity is inherently part of an intelligent life "success story"—and whether they're actually rare or quite common, the thoughts they ponder and conclusions they draw will be identical. This forces us to admit that being special is at least a possibility.

And if we are special, when exactly did we become special—i.e. which step did we surpass that almost everyone else gets stuck on?

One possibility: The Great Filter could be at the very beginning—it might be incredibly unusual for life to begin at all. This is a candidate because it took about a billion years of Earth's existence to finally happen, and because we have tried extensively to replicate that event in labs and have never been able to do it. If this is indeed The Great Filter, it would mean that not only is there no intelligent life out there, there may be no other life at all.

Another possibility: The Great Filter could be the jump from the simple prokaryote cell to the complex eukaryote cell. After prokaryotes came into being, they remained that way for almost two billion years before making the evolutionary jump to being complex and having a nucleus. If this is The Great Filter, it would mean the universe is teeming with simple prokaryote cells and almost nothing beyond that.

There are a number of other possibilities—some even think the most recent leap we've made to our current intelligence is a Great Filter candidate. While the leap from semi-intelligent life (chimps) to intelligent life (humans) doesn't at first seem like a miraculous step, Steven Pinker rejects the idea of an inevitable "climb upward" of evolution: "Since evolution does not strive for a goal but just happens, it uses the adaptation most useful for a given ecological niche, and the fact that, on Earth, this led to technological intelligence only once so far may suggest that this outcome of natural selection is rare and hence by no means a certain development of the evolution of a tree of life."

Most leaps do not qualify as Great Filter candidates. Any possible Great Filter must be a one-in-a-billion type thing where one or more total freak occurrences need to happen to provide a crazy exception—for that reason, something like the jump from single-cell to multi-cellular life is ruled out, because it has occurred as many as 46 times, in isolated incidents, just on this planet alone. For the same reason, if we were to find a fossilized eukaryote cell on Mars, it would rule the above "simple-to-complex cell" leap out as a possible Great Filter (as well as anything before that point on the evolutionary chain)—because if it happened on both Earth and Mars, it's clearly not a one-in-a-billion freak occurrence.

If we are indeed rare, it could be because of a fluky biological event, but it also could be attributed to what is called the Rare Earth Hypothesis, which suggests that though there may be many Earth-like planets, the particular conditions on Earth—whether related to the specifics of this solar system, its relationship with the moon (a moon that large is unusual for such a small planet and contributes to our particular weather and ocean conditions), or something about the planet itself—are exceptionally friendly to life.

2. We're the First

The Fermi Paradox: Where the Hell Are the Other Earths?Expand

For Group 1 Thinkers, if the Great Filter is not behind us, the one hope we have is that conditions in the universe are just recently, for the first time since the Big Bang, reaching a place that would allow intelligent life to develop. In that case, we and many other species may be on our way to super-intelligence, and it simply hasn't happened yet. We happen to be here at the right time to become one of the first super-intelligent civilizations.

One example of a phenomenon that could make this realistic is the prevalence of gamma-ray bursts, insanely huge explosions that we've observed in distant galaxies. In the same way that it took the early Earth a few hundred million years before the asteroids and volcanoes died down and life became possible, it could be that the first chunk of the universe's existence was full of cataclysmic events like gamma-ray bursts that would incinerate everything nearby from time to time and prevent any life from developing past a certain stage. Now, perhaps, we're in the midst of an astrobiological phase transition and this is the first time any life has been able to evolve for this long, uninterrupted.

3. We're Fucked (The Great Filter is Ahead of Us)

The Fermi Paradox: Where the Hell Are the Other Earths?Expand

If we're neither rare nor early, Group 1 thinkers conclude that The Great Filter must be in our future. This would apply that life regularly evolves to where we are, but that something prevents life from going much further and reaching high intelligence in almost all cases—and we're unlikely to be an exception.

One possible future Great Filter is a regularly-occurring cataclysmic natural event, like the above-mentioned gamma-ray bursts, except they're unfortunately not done yet and it's just a matter of time before all life on Earth is suddenly wiped out by one. Another candidate is the possible inevitability that nearly all intelligent civilizations end up destroying themselves once a certain level of technology is reached.

This is why Oxford University philosopher Nick Bostrom says that "no news is good news." The discovery of even simple life on Mars would be devastating, because it would cut out a number of potential Great Filters behind us. And if we were to find fossilized complex life on Mars, Bostrom says "it would be by far the worst news ever printed on a newspaper cover," because it would mean The Great Filter is almost definitely ahead of us—ultimately dooming the species. Bostrom believes that when it comes to The Fermi Paradox, "the silence of the night sky is golden."

Explanation Group 2: Type II and III intelligent civilizations are out there—and there are logical reasons why we might not have heard from them.

Group 2 explanations get rid of any notion that we're rare or special or the first at anything—on the contrary, they believe in the Mediocrity Principle, whose starting point is that there is nothing unusual or rare about our galaxy, solar system, planet, or level of intelligence, until evidence proves otherwise. They're also much less quick to assume that the lack of evidence of higher intelligence beings is evidence of their nonexistence—emphasizing the fact that our search for signals stretches only about 100 light years away from us (0.1% across the galaxy) and has only been going on for under a century, a tiny amount of time. Group 2 thinkers have come up with a large array of possible explanations for the Fermi Paradox. Here are 10 of the most discussed:

Possibility 1) Super-intelligent life could very well have already visited Earth, but before we were here. In the scheme of things, sentient humans have only been around for about 50,000 years, a little blip of time. If contact happened before then, it might have made some ducks flip out and run into the water and that's it. Further, recorded history only goes back 5,500 years—a group of ancient hunter-gatherer tribes may have experienced some crazy alien shit, but they had no good way to tell anyone in the future about it.

Possibility 2) The galaxy has been colonized, but we just live in some desolate rural area of the galaxy. The Americas may have been colonized by Europeans long before anyone in a small Inuit tribe in far northern Canada realized it had happened. There could be an urbanization component to the interstellar dwellings of higher species, in which all the neighboring solar systems in a certain area are colonized and in communication, and it would be impractical and purposeless for anyone to deal with coming all the way out to the random part of the spiral where we live.

Possibility 3) The entire concept of physical colonization is a hilariously backward concept to a more advanced species. Remember the picture of the Type II Civilization above with the sphere around their star? With all that energy, they might have created a perfect environment for themselves that satisfies their every need. They might have hyper-advanced ways of reducing their need for resources and zero interest in leaving their happy utopia to explore the cold, empty, undeveloped universe.

An even more advanced civilization might view the entire physical world as a horribly primitive place, having long ago conquered their own biology and uploaded their brains to a virtual reality, eternal-life paradise. Living in the physical world of biology, mortality, wants, and needs might seem to them the way we view primitive ocean species living in the frigid, dark sea. FYI, thinking about another life form having bested mortality makes me incredibly jealous and upset.

Possibility 4) There are scary predator civilizations out there, and most intelligent life knows better than to broadcast any outgoing signals and advertise their location. This is an unpleasant concept and would help explain the lack of any signals being received by the SETI satellites. It also means that we might be the super naive newbies who are being unbelievably stupid and risky by ever broadcasting outward signals. There's a debate going on currently about whether we should engage in METI (Messaging to Extraterrestrial Intelligence—the reverse of SETI, which only listens) or not, and most people say we should not. Stephen Hawking warns, "If aliens visit us, the outcome would be much as when Columbus landed in America, which didn't turn out well for the Native Americans." Even Carl Sagan (a general believer that any civilization advanced enough for interstellar travel would be altruistic, not hostile) called the practice of METI "deeply unwise and immature," and recommended that "the newest children in a strange and uncertain cosmos should listen quietly for a long time, patiently learning about the universe and comparing notes, before shouting into an unknown jungle that we do not understand." Scary.[2]

Possibility 5) There's one and only one instance of higher-intelligent life—a "superpredator" civilization (kind of like humans are here on Earth)—who is farmore advanced than everyone else and keeps it that way by exterminating any intelligent civilization once they get past a certain level. This would suck. The way it might work is that it's an inefficient use of resources to exterminate all emerging intelligences, maybe because most die out on their own. But past a certain point, the super beings make their move—because to them, an emerging intelligent species becomes like a virus as it starts to grow and spread. This theory suggests that whoever was the first in the galaxy to reach intelligence won, and now no one else has a chance. This would explain the lack of activity out there because it would keep the number of super-intelligent civilizations to just one.

Possibility 6) There's plenty of activity and noise out there, but our technology is too primitive and we're listening for the wrong things. Like walking into a modern-day office building, turning on a walkie-talkie, and when you hear no activity (which of course you wouldn't hear because everyone's texting, not using walkie-talkies), determining that the building must be empty. Or maybe, as Carl Sagan has pointed out, it could be that our minds work exponentially faster or slower than another form of intelligence out there—e.g. it takes them 12 years to say "Hello," and when we hear that communication, it just sounds like white noise to us.

Possibility 7) We are receiving contact from other intelligent life, but the government is hiding it. This is an idiotic theory, but I had to mention it because it's talked about so much.

Possibility 8) Higher civilizations are aware of us and observing us but concealing themselves from us (AKA the "Zoo Hypothesis"). As far as we know, super-intelligent civilizations exist in a tightly-regulated galaxy, and our Earth is treated like part of a vast and protected national park, with a strict "Look but don't touch" rule for planets like ours. We wouldn't be aware of them, because if a far smarter species wanted to observe us, it would know how to easily do so without us noticing. Maybe there's a rule similar to the Star Trek's "Prime Directive" which prohibits super-intelligent beings from making any open contact with lesser species like us or revealing themselves in any way, until the lesser species has reached a certain level of intelligence.

Possibility 9) Higher civilizations are here, all around us, but we're too primitive to perceive them. Michio Kaku sums it up like this:

Lets say we have an ant hill in the middle of the forest. And right next to the ant hill, they're building a ten-lane super-highway. And the question is "Would the ants be able to understand what a ten-lane super-highway is? Would the ants be able to understand the technology and the intentions of the beings building the highway next to them?"

So it's not that we can't pick up the signals from Planet X using our technology, it's that we can't even comprehend what the beings from Planet X are or what they're trying to do. It's so beyond us that even if they really wanted to enlighten us, it would be like trying to teach ants about the internet.

Along those lines, this may also be an answer to "Well if there are so many fancy Type III Civilizations, why haven't they contacted us yet?" To answer that, let's ask ourselves—when Pizarro made his way into Peru, did he stop for a while at an anthill to try to communicate? Was he magnanimous, trying to help the ants in the anthill? Did he become hostile and slow his original mission down in order to smash the anthill apart? Or was the anthill of complete and utter and eternal irrelevance to Pizarro? That might be our situation here.

Possibility 10) We're completely wrong about our reality. There are a lot of ways we could just be totally off with everything we think. The universe might appear one way and be something else entirely, like a hologram. Or maybe we're the aliens and we were planted here as an experiment or as a form of fertilizer. There's even a chance that we're all part of a computer simulation by some researcher from another world, and other forms of life simply weren't programmed into the simulation.
How the Mind Works $13.49

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As we continue along with our possibly-futile search for extraterrestrial intelligence, I'm not really sure what I'm rooting for. Frankly, learning either that we're officially alone in the universe or that we're officially joined by others would be creepy, which is a theme with all of the surreal storylines listed above—whatever the truth actually is, it's mindblowing.

Beyond its shocking science fiction component, The Fermi Paradox also leaves me with a deep humbling. Not just the normal "Oh yeah, I'm microscopic and my existence lasts for three seconds" humbling that thinking about the universe always triggers. The Fermi Paradox brings out a sharper, more personal humbling, one that can only happen after spending hours of research hearing your species' most renowned scientists present insane theories, change their minds again and again, and wildly contradict each other—reminding us that future generations will look at us in the same way we see the ancient people who were sure that the stars were the underside of the dome of heaven, and they'll think "Wow they really had no idea what was going on."

Compounding all of this is the blow to our species' self-esteem that comes with all of this talk about Type II and III Civilizations. Here on Earth, we're the king of our little castle, proud ruler of the huge group of imbeciles who share the planet with us. And in this bubble with no competition and no one to judge us, it's rare that we're ever confronted with the concept of being a dramatically inferior species to anyone. But after spending a lot of time with Type II and III Civilizations over the past week, our power and pride are seeming a bit David Brent-esque.

That said, given that my normal outlook is that humanity is a lonely orphan on a tiny rock in the middle of a desolate universe, the humbling fact that we're probably not as smart as we think we are, and the possibility that a lot of what we're sure about might be wrong, sounds wonderful. It opens the door just a crack that maybe, just maybe, there might be more to the story than we realize.

General Discussion / worth it
« on: July 20, 2014, 02:14:09 PM »

General Discussion / Silicon Valley
« on: June 02, 2014, 12:18:42 AM »
Season finale tonight. Pretty damn good first season, though slightly slow start. Didn't know one of the main dudes had already died. Sucks. Renewed for second season though.

Tech Heads / Git and Subversion
« on: May 20, 2014, 04:22:05 PM »
where's best place for explanation for both? Just doing simple BASH and PowerShell scripts.

General Discussion / Furnace questions
« on: May 15, 2014, 09:45:05 PM »
Don't remember if I've asked this before or not, quick search of GD says no. Have a gas furnace in my rental house. It has a nasty habit of turning on when the internal temp is >80-85 degrees. I think it's just the fan, as hot air (or at least hotter than ambient) is not blowing. There is no fan/auto control on the thermostat. It's just a wheel-type with internal temp below and setting above, which is off. Yet, it still runs. Why does it do this? Should I kill the pilot light and unplug it?

In the furnace closet, near the pilot light there is a simple toggle switch that says Summer: on/off. This switch appears to do nothing. What is it for?

General Discussion / MOVED: guess
« on: May 15, 2014, 01:54:41 PM »

Tech Heads / Kamara, Cry me a river of SQL suggestions...
« on: May 03, 2014, 03:57:22 PM »
IIRC you are/were an MS SQL guy. T/F?

If so, best way to learn this? I am taking an Exchange class this next week, but I feel like to be a well rounded admin, plus a project I am assigned to this year, I need to know MS SQL. What is the difference (if any) between an Admin maintaining a SQL server, and a SQL Server Admin?

General Discussion / [NERD] Real History of Science Fiction
« on: April 20, 2014, 06:21:17 PM »
Reminder BBCA

started yesterday. missed it, but got it recording now.

Tech Heads / Time to take a minute and reflect...
« on: February 20, 2014, 01:04:14 PM »
System Administrator III promotion went through today

feels good man



Scientists achieve nuclear fusion with giant laser
A successful nuclear fusion process could help solve the world's energy problems

By Lucas Mearian
February 13, 2014 06:24 AM ET

Computerworld - Researchers at the Lawrence Livermore National Laboratory Wednesday said they've achieved a first: A nuclear fusion system has produced more energy than it initially absorbed.

While that may seem a small victory, it is the first time scientists have been able to replicate, to a small degree, the same process that the Sun and stars use to create their massive amounts of energy.

The research, published in the peer reviewed journal Nature, involved a petawatt power laser used to try to ignite fusion plasma fuel in a confined space. Each pulse of the laser, which delivered peak power of 1,000,000,000,000,000 watts, lasted less than 30 femtoseconds, or 0.00000000000003 seconds.

The laser squeezes hydrogen atoms together producing helium atoms, and in the process a massive amount of energy is released.

A fusion reaction is markedly different from fission reactions that are used in today's nuclear reactors. Instead of splitting atoms as fission does, fusion bonds atoms.

With fusion, only a tiny amount of fuel is present at any given time (typically about a milligram), according to Mike Dunne, director for Laser Fusion Energy at Lawrence Livermore Labs.

The laser, known as the National Ignition Facility (NIF), uses 192 beams 300 yards long that focus on a fuel cell about the diameter of a No. 2 pencil.


The hohlraum
A metallic case called a hohlraum holds the fuel capsule for NIF experiments. Target handling systems precisely position the target and freeze it to cryogenic temperatures (18 kelvins, or -427 degrees Fahrenheit) so that a fusion reaction is more easily achieved.

While powerful, the laser has not yet been able to ignite the plasma fuel. When and if it does, the fuel would begin to burn in a self-sustaining reaction to such a degree that it will produce a megajoule of energy.

Producing that staggering amount of energy could help to solve the world's energy issues.

"Think of it like the gas in the piston chamber of your car, where the idea is to ignite all the fuel to produce an efficient burn. So it is 'self-sustaining' but can never be 'run-away.' In the case of laser fusion, the burn time is incredibly short - typically a few tens of picoseconds," Dunne said in an email to Computerworld.

The researchers' latest victory marks the accomplishment of a key goal on the way to plasma fuel ignition: the project generated energy through a fusion reaction that exceeded the amount of energy deposited into deuterium-tritium fusion fuel and hotspot during the implosion process, "resulting in a fuel gain greater than unity," the team stated in the Nature article.

"Ignition is the ultimate goal of the experiments, so the latest result marks a waypoint on the way to that point (albeit quite a significant waypoint)," Dunne said.

The next significant step for the research is to achieve an "alpha burn," where the fusion output more than doubles the energy input to the fuel. In an alpha burn, the researchers hope to pass a particular threshold of energy output -- specifically 10,000,000,000,000,000 fusion reactions.

"We are currently a few percent below this value," Dunne said.

Once ignition is achieved, it promises a path toward a sustainable, environmentally sound energy source that would exceed that of any previously created.

"There are a number of possible paths forward," Dunne said, "and it will require a close partnership between industry and government. But in principle, because the NIF was built at the same scale as the fusion performance needed for a power plant, the leap is not as great as you may think."

Dunne believes there once nuclear fusion energy is achieved, there will be an overriding push to capitalize on the success of it.

"It is, after all, often called the 'holy grail' of energy sources," he said.

Lucas Mearian covers storage, disaster recovery and business continuity, financial services infrastructure and health care IT for Computerworld. Follow Lucas on Twitter at Twitter@lucasmearian, or subscribe to Lucas's RSS feed Mearian RSS. His email address is
Read more about Emerging Technologies in Computerworld's Emerging Technologies Topic Center.

Tech Heads / Linux Application Server (cluster) management
« on: January 28, 2014, 11:59:11 AM »
OK, so the other thread got me started and was very helpful. Got the PDC online yesterday, hosting DNS and DHCP, as well as Domain Services. The File server comes online tonight, becoming an "SDC" file and print server. Next up here, my application server, that will start off hosting Symantec antivirus as possibly a Hyper-V vm. Thanks all.

Now, I find myself in the dark arts of Linux management. I was slightly outclassed for the Windows role, now I am a bug amongst giants. I have a very high level understanding of how my current job does this:

We have 4 general purpose shared linux servers that anyone can get to/use, and are grid submission hosts if needed, but are locked down such that anything run on them (since they are shared) gets a RAM and/or CPU and/or Time cap? Any ideas how that happens/works?

Then we have our grid. IANA HPC guy. Zero background. I know there are 3 "queues" that determine how much power you get assigned to your job, where we request people use the smallest unit that will work, obviously. Is this something native to all grid setups, or is it similar/same to above?

I need to figure out what resources to buy. I've never been in charge of something like this. Initial start up will be about 10-20 people. Final numbers not expected to reach over 100, at this time; no idea on that growth timetable either. Going to start out with 1 File Server (and maybe 2nd Domain Controller and/or application server for Antivirus), 1DC with Print services - all Windows OS based. I will also have 1 Mac Mini server to support machine imaging with DeployStudio. I can handle the Mac Server as it won't need too many resources. I'm more worried about the Windows needs and adequately meeting them, but still leaving a bit to grow in the near term.

Other considerations will possibly be encrypted drives for the data.

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