You got it a little bit wrong. If Joe or Apple is nearing 100% of the market then you do NOT want to invest in Jow or Apple because there is no room for growth. Now that Apple has the largeshare of the over $1K retail market it means they will have to "move on" and either try and sell to bussines or in the sub $1K retail market. But one thing is for sure, There is little growth potential for them remaining in $1K+ retail
"Think about this : the evidence that Jesus walked over water is exactly as strong as the evidence Julius Caesar conquered Gaul. How then, to judge the relative truth of both events"
I have to call you on that one. Historical events has have weak or strong evedence. For example the event could have been seen by many people and written about by multiple autors and if hundreds of independent accounts of the event all match up then we have a very strong case.
We we have a VERY strong case that World War II happened and is not just a made up story.
The Walking on water story is not written by an eye witness. It was oral tradition for many years before finaly it was written down, not many people saw it happen. The case for this is much weaker then the case for WWII.
The story about Gaul is between the two. There were many educated people in Rome who could write and many witness to the events
"when it comes to my first choice, independent of problem domain,"
Notice the choise of words here. nothing wrong but it implies a small one-person project. Maybe even less then that a one person part time project.
But what if there were 250 software engineeers working full time over three the five years? This is what Ada was designed for, large scale software. Very few companies can do this kind of work. Mostly you are looking at the big aerospace companies, like Northrop, Lockeed and Boeing. The major problem to be solved in large scale software is getting the various parts to fit together. Ada it turns out is very good at speciying interfaces and isolating the effect of a change. This last part is realy the most importent. You need to have high certainty that a change some place doe not cause a bug some place else.
It is good to program in a language designed for the task at hand. Ada was designed to control "things that can't fail" like aircraft flight controls and nucear power plants, guidance systems of "smart bombs" and soon. Must people don't work in this area. Most people write stuff that runs on desktop machines and web servers. In that environment software error is just expected and tolerated. So Ada will be a minority language.
Ada will always be used more by projects where the cost of software error is very high.
You are missing the point. The MBP is $1999 and even if the Dell were $500 it can't run Mac OS X so you might as well save the $495 and buy a 12 inch marble floor tile. The hunk of rock runs Mac OS X about as well as the Dell.
You have to stand WAY, WAY back and look at the whole big picture. You are (say) a photographer and you shoot sports and have a short dealine. You have 1,000 exposures on a CF memory card and you publisher wants you best 12 shots. How can you sort those 1,000 edit crop and send the best in a fixed amont of time?
For a lot of photographers the answer is to use Apple's "Aperture". So it it's Aperturer you need then the Dell and the floor tile are about the same. Neither are even an option.
Now let's do the same story about a guy who does video or designs web sites or or a scientest with data to sort through. All these people have jobs to do they don't look at the details of what's inside the guts of a computer they just see mac os x as helping them get there product done and out the door.
But then there are a few geeks who don't need a computers at all but mess with a PC is a hobby. they are the ones talking abut Brand X graphic card and frames persecond and the price of various types of RAM
Apple's fear of loosing. Apple has never gone after anyone who has put Mac OS X on a PC. Even that company who is seling Mac OS on PCs through their web site. I'm sure the reason is the they just might loose. The EULA is a contract. In order for a contract to be valid BOTH parties have to agree to it. Could you imagine otherwise? Contracts that only one side has to agree with binding on an un-willing party. That's worse than silly. So Back to the EULA. Have to even tried to decline one and then get you money back? Just try to get you money back. "How can a contract that you can't decline be valid?" Apple does not want that question to go before a judge. For years now they wan't taken anyone to courtover this.
When My kids watch TV they are never at it full time they are awyas doing something else at the same time so when the ads do come on they just do more of that something else. But when older people watch TV they turn it on to wach a specific program they like and don't multi task so the ads are more annoying to them hence they are more likey to skip the ad.
My kids simply turn on the TV, they don't turn it on to watch any specifi program just "whatever is on"
I think those that skip ads are simply those who want to watch the program
"similarly powerful"? By you logic an old 1960's VW Bug is "similarly powerful" to a new BMW because both get you to work in the same amount of time.
There is something in the physical design that Apple gets right. One of them is the lack of fan noise and in the case of mini and imac the very low power consummed.
Why would anyone ever buy new car when they could pick up a "similarly powerful" for maybe $2K.
The answer is easy. They just like having nice stuff and for many people $10K or $20K more i not a big deal.
The typically have a model of the spacecraft in the lab. any change to the software gets uploaded and tested in the lab. There will be quite a bit of formal testing using a detailed written test plan. Then there is some kind of a change review bord that meets and reviewis the tests and the plan. Finally the changes get packaged up. The they test the upload procedure on the lab simulator. Then finaly the change is uploaded.
Typing into a shell is not only slow but far to risky. Everything gets tested for a good long time and many eyes look it over
It you are the kind of programmer that like just hacking away and changing code until it work this kind of work is not for you. These guys will write up a design and defend it to a review group then they do the code and then they will do a line by line walk through then they go to test. the process is very slow going and productivity runs at well under 200 lines of code per month per engineeer.
Yes many would leave. But typically what they do they send money back home. And then there are the really smart ones. they find ways to make maoney right at home by building solar heating systemd from junk or something along those lines
Just How Effective is System Hardening? It can be very, very effective. But the problem is the average end user completely lacks the skills and time to do this and I'd say the average sysadmin is not much better off. But if you do take the take to read up and set up services runing inside (say) Solaris "containers" or on xen under link and get all you access lists set up and fire wall rules do at the IP address level you can build a very secure server. I've seen server farms run for years without a problem
But the unsolvable problem is social enginerring and Trojans. When so guy is told that if he runs this program he will get access to free goatporn, he runs it and it seems to work but in doing so maybe he has in effect openned up his machine to remote access. No good way to fix this if thr attacker is good and uses ports that need to be left open, like https.
Yes it's a small boat but it does not have to cary humans so it does not ned things like companionway hatches, food and water. The boat I'd image would be completly sealed and heavy blasted with lead acid batteries. I imagine the boats will be self righting. If I were designing them they's have rigid sails, more like an airplane wing than a sail. A boat like that simply coud not turn upside down
Yes but all we know is "university" perhaps this softwre is used only be people studying to be elementary school teachers. Very few of these students would have a clue about how to write software. Same if they were Fine Art or Dance majors. The subject arwea maters a LOT and he does not tell us.
You've already done the number one thing required. Build something usful.
You are NOT going to get much usful advice here because your question is so generic. We don't know what platfoorm you are on, what tools you are using or even the subject area. Who are your users? whis is their technical background? How can anyone of us offer informed advice?
The problem if modular spacecraft has aways been the same: If you build a general purpose bus then almaost alwas you find that it is over-built for any one specific mission. If you build a bus the is mission specifi it will always be lighter and cheaper. The modular bus has to support all kinds of payloads and hande the worst case of power and mass. It is kind of like saying the "Standard car" will now by a full size pickup truck with an extended cab. It will seat six people and haul 1,000 pounds of cargo. But what if the mission is to drive one person to work? OK so you change the standard an make it a mini-copper. Put now what if you really do need to deliver some lumber to a construction site.
Now imagine that gas cost not $4 per galon but $100,000 per galon. At that price it would be worth building a special car for every trip and then throwing the car away after just one trip. This is what NASA does because the operational and luach cost is so much higher than any other cost
NASA also works off a fix mass budget. If the bus is 1 pound to heavy that means one pound less fuel can be loaded which translates into reduced lifetime in space or maybe the one pound saved could be used in improve an instrument.
In effect NASA is payinf more then $100K per galon for gas. I think it costs about a million dollors a mile to get to space, at those prices it pays to custom design each spacecraft to it s optimized for each mission
It doesn't work that way. They don't build NASA spacecraft from blue prints because NASA does not launch enough of the same kind. Every mission is different. Also NASA simmple does not launch many spacecraft. If you look at numbers launched the DoD is a much larger user of space. The Military has missions queued up and lauches at a rather high rate. And they are able to take advantage of this. For example GPS spacecraft are built in "blocks" of identical units. It is not quite an automotice style assembly line but they are built in batches. And then there is the comercial side of space. These guys do a number of launches too. Almost all are communications sats of some kind, direct TV broadcast or what ever. They tend to re-use designs too. But NASA is not in the business of launching more then one or two of each type of mission. When they do launch two they will order them at the same time.
My brother has the best anti-telemarketing idea. He always says "yes". "Yes I need my house painted." He makes an apointment for them to come out and gives them a time when he is not home. Causes the ideots to waste hours of their time and a few galons of gas. We should all do this.
What I do is place them on hold - forever. This wastes more of their time then if I simply hung the phone up.
Pluto is not a plent because plaets are defined as soething which "dominates" the area in which it orbits. Pluto does not do this. It shares it's space with many, many "peers"
Mars is a planet because it is by a huge margin the biggest thing in that part of the solar system. The same can not be said of Pluto.
A "mmon" is simply any natural object capured in orbit around a planet.
Actually there were uncountable numbers of "moons" right after the impact. These were really to small be even be called "moons" it was more like a cloud or a dense set of rings. Much of the young Earth was vaporized. Then over time this vapor and dust condensed into biger clumps and these into bigger ones unitl now there are just two clumps left The earth and it's present moon.
I think what this article adds is detail about that period when there were only a few clumps.
I think logically we knew that if the Erach once had uncountable trillions of specs orbiting and now has only one big one there mut have been a time when there were 1,000 and a time when there were four.
My background is in Computer Science too. 20+ years working in the field. But back in school I took some EE clasess. There is really no substitute for learning the basics and the math that goes with it. Many people see complex numbers or an integral sign and shut the book. Don't do that. You need to get through the basics of what I'd call "EE 101" at least to the point of basic AC theory and a little bit about how semiconductors work.
The ARRL publishes a "handbook" it is of course aimmed mostly at amature ("ham") radio but it has good intro chapetrs on basic theory written for a reader who has only taken math through high school and stoped short of calculus. but un-like many books it continues on to teach "real world" things like how real components differe from the ideal ones and how to solder and it has pages of data for common transisters. There are also many contruction projects with plans and photos. They publish this every year and it is bigger them many phone books. Current year handbooks are expensive but Amazon will sell older (the 2005 ed.) copies cheap
Search on the title "The ARRL Handbook for Radio Communications" This is such a common referance book that most libraries will have a copy.
It is geared to radio so it has chaperts on things like transmition lines and antenna theory and inpedance matching but also goes into making your own printed circuit boards and how to work an ociloscope and meter and basic eletronic trouble shooting. It is not a "text book" it is more like a compendium of articles but it is well edited as you would expect of an "85th edition" book.
The reason to seporate fiber cables is not because of EMF. The reason is so that visual inspection can take place. If the cables where layed in the same conduit how could you varify that as some point they were con cross connected. But if they are 18 inches apart over the entire run visual inspection becomes easier and certainly less costly.
One thing people fail to understand is that the cost of a system includes Design, Contruction and TEST. If the designer is smart he can greatly reduce the cost of the later two phases.
The trouble here is that these edits were likely NOT made byt "The Government" but by some low level govenment employee who was posting to the Wiki when he should have been doing something else.
Everyone works for some body. Let's say my job is at Ford and I put the wheels in F250 pickup trucks. If I post to the wiki from a computer located at the Ford plant and say "Ford makes the best trucks, Chevy sucks" is this a case of Ford promoting it's own business? I'd say not even it it came from a Ford IP address.
On the other hand what if the article was about the US DOJ itself and some DOJ employee found a technical mistake in a paragraph on the history of the DOJ. Who better to corect the error?
I think what you want to bad are self-promotion and conflicts of interrest
Why the open source drivers? I think the PC makers want to get out from under microsoft as much as or maybe even more than anyone else. With MS Windows there is no way to be "different" so people shop by price. None of them like this race to the botom. Was long as they continue to sell Windows machines they wil remain in this destrouctive race.
Microsoft's problem is that back when PCs cost $1000 charging $40 for the OS was reasonable but now that you can build a PC for $250 that $40 paymant to Microsoft is one of the mosr expensive "parts" inside the PC. I'm sure Dell and the others woud like for the OS price to fall to zero.
Business will continue to need Windows because they need Office. Most home users really don't use Office. They only run a web browser and games so there is not a good reason to have Windows. I'm sure over time the low-end PCs will loose Windows in favor of Linux or maybe BSD unless Microsoft can offer a Winows version for nearly free.
As the title says your stereotypes wrong. It's the "gammers" who are the smelly 20-somthing year olds who have no job and live in their mom's basments. UNIX geeks are 50 and 60 year olds with long grey pony tails, They went to school at UC Barkley in the 1960 or early 70s and now drive around in expensive hybred or electric cards
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You got it a little bit wrong. If Joe or Apple is nearing 100% of the market then you do NOT want to invest in Jow or Apple because there is no room for growth. Now that Apple has the largeshare of the over $1K retail market it means they will have to "move on" and either try and sell to bussines or in the sub $1K retail market. But one thing is for sure, There is little growth potential for them remaining in $1K+ retail
"Think about this : the evidence that Jesus walked over water is exactly as strong as the evidence Julius Caesar conquered Gaul. How then, to judge the relative truth of both events"
I have to call you on that one. Historical events has have weak or strong evedence. For example the event could have been seen by many people and written about by multiple autors and if hundreds of independent accounts of the event all match up then we have a very strong case.
We we have a VERY strong case that World War II happened and is not just a made up story.
The Walking on water story is not written by an eye witness. It was oral tradition for many years before finaly it was written down, not many people saw it happen. The case for this is much weaker then the case for WWII.
The story about Gaul is between the two. There were many educated people in Rome who could write and many witness to the events
"when it comes to my first choice, independent of problem domain,"
Notice the choise of words here. nothing wrong but it implies a small one-person project. Maybe even less then that a one person part time project.
But what if there were 250 software engineeers working full time over three the five years? This is what Ada was designed for, large scale software. Very few companies can do this kind of work. Mostly you are looking at the big aerospace companies, like Northrop, Lockeed and Boeing. The major problem to be solved in large scale software is getting the various parts to fit together. Ada it turns out is very good at speciying interfaces and isolating the effect of a change. This last part is realy the most importent. You need to have high certainty that a change some place doe not cause a bug some place else.
It is good to program in a language designed for the task at hand. Ada was designed to control "things that can't fail" like aircraft flight controls and nucear power plants, guidance systems of "smart bombs" and soon. Must people don't work in this area. Most people write stuff that runs on desktop machines and web servers. In that environment software error is just expected and tolerated. So Ada will be a minority language.
Ada will always be used more by projects where the cost of software error is very high.
You are missing the point. The MBP is $1999 and even if the Dell were $500 it can't run Mac OS X so you might as well save the $495 and buy a 12 inch marble floor tile. The hunk of rock runs Mac OS X about as well as the Dell.
You have to stand WAY, WAY back and look at the whole big picture. You are (say) a photographer and you shoot sports and have a short dealine. You have 1,000 exposures on a CF memory card and you publisher wants you best 12 shots. How can you sort those 1,000 edit crop and send the best in a fixed amont of time?
For a lot of photographers the answer is to use Apple's "Aperture". So it it's Aperturer you need then the Dell and the floor tile are about the same. Neither are even an option.
Now let's do the same story about a guy who does video or designs web sites or or a scientest with data to sort through. All these people have jobs to do they don't look at the details of what's inside the guts of a computer they just see mac os x as helping them get there product done and out the door.
But then there are a few geeks who don't need a computers at all but mess with a PC is a hobby. they are the ones talking abut Brand X graphic card and frames persecond and the price of various types of RAM
protect them from a massive lawsuit?
Apple's fear of loosing. Apple has never gone after anyone who has put Mac OS X on a PC. Even that company who is seling Mac OS on PCs through their web site. I'm sure the reason is the they just might loose. The EULA is a contract. In order for a contract to be valid BOTH parties have to agree to it. Could you imagine otherwise? Contracts that only one side has to agree with binding on an un-willing party. That's worse than silly. So Back to the EULA. Have to even tried to decline one and then get you money back? Just try to get you money back. "How can a contract that you can't decline be valid?" Apple does not want that question to go before a judge. For years now they wan't taken anyone to courtover this.
When My kids watch TV they are never at it full time they are awyas doing something else at the same time so when the ads do come on they just do more of that something else. But when older people watch TV they turn it on to wach a specific program they like and don't multi task so the ads are more annoying to them hence they are more likey to skip the ad.
My kids simply turn on the TV, they don't turn it on to watch any specifi program just "whatever is on"
I think those that skip ads are simply those who want to watch the program
"similarly powerful"? By you logic an old 1960's VW Bug is "similarly powerful" to a new BMW because both get you to work in the same amount of time.
There is something in the physical design that Apple gets right. One of them is the lack of fan noise and in the case of mini and imac the very low power consummed.
Why would anyone ever buy new car when they could pick up a "similarly powerful" for maybe $2K.
The answer is easy. They just like having nice stuff and for many people $10K or $20K more i not a big deal.
The typically have a model of the spacecraft in the lab. any change to the software gets uploaded and tested in the lab. There will be quite a bit of formal testing using a detailed written test plan. Then there is some kind of a change review bord that meets and reviewis the tests and the plan. Finally the changes get packaged up. The they test the upload procedure on the lab simulator. Then finaly the change is uploaded.
Typing into a shell is not only slow but far to risky. Everything gets tested for a good long time and many eyes look it over
It you are the kind of programmer that like just hacking away and changing code until it work this kind of work is not for you. These guys will write up a design and defend it to a review group then they do the code and then they will do a line by line walk through then they go to test. the process is very slow going and productivity runs at well under 200 lines of code per month per engineeer.
Yes many would leave. But typically what they do they send money back home. And then there are the really smart ones. they find ways to make maoney right at home by building solar heating systemd from junk or something along those lines
Just How Effective is System Hardening? It can be very, very effective. But the problem is the average end user completely lacks the skills and time to do this and I'd say the average sysadmin is not much better off. But if you do take the take to read up and set up services runing inside (say) Solaris "containers" or on xen under link and get all you access lists set up and fire wall rules do at the IP address level you can build a very secure server. I've seen server farms run for years without a problem
But the unsolvable problem is social enginerring and Trojans. When so guy is told that if he runs this program he will get access to free goatporn, he runs it and it seems to work but in doing so maybe he has in effect openned up his machine to remote access. No good way to fix this if thr attacker is good and uses ports that need to be left open, like https.
Yes it's a small boat but it does not have to cary humans so it does not ned things like companionway hatches, food and water. The boat I'd image would be completly sealed and heavy blasted with lead acid batteries. I imagine the boats will be self righting. If I were designing them they's have rigid sails, more like an airplane wing than a sail. A boat like that simply coud not turn upside down
Yes but all we know is "university" perhaps this softwre is used only be people studying to be elementary school teachers. Very few of these students would have a clue about how to write software. Same if they were Fine Art or Dance majors. The subject arwea maters a LOT and he does not tell us.
You've already done the number one thing required. Build something usful.
You are NOT going to get much usful advice here because your question is so generic. We don't know what platfoorm you are on, what tools you are using or even the subject area. Who are your users? whis is their technical background? How can anyone of us offer informed advice?
The problem if modular spacecraft has aways been the same: If you build a general purpose bus then almaost alwas you find that it is over-built for any one specific mission. If you build a bus the is mission specifi it will always be lighter and cheaper. The modular bus has to support all kinds of payloads and hande the worst case of power and mass. It is kind of like saying the "Standard car" will now by a full size pickup truck with an extended cab. It will seat six people and haul 1,000 pounds of cargo. But what if the mission is to drive one person to work? OK so you change the standard an make it a mini-copper. Put now what if you really do need to deliver some lumber to a construction site.
Now imagine that gas cost not $4 per galon but $100,000 per galon. At that price it would be worth building a special car for every trip and then throwing the car away after just one trip. This is what NASA does because the operational and luach cost is so much higher than any other cost
NASA also works off a fix mass budget. If the bus is 1 pound to heavy that means one pound less fuel can be loaded which translates into reduced lifetime in space or maybe the one pound saved could be used in improve an instrument.
In effect NASA is payinf more then $100K per galon for gas. I think it costs about a million dollors a mile to get to space, at those prices it pays to custom design each spacecraft to it s optimized for each mission
It doesn't work that way. They don't build NASA spacecraft from blue prints because NASA does not launch enough of the same kind. Every mission is different. Also NASA simmple does not launch many spacecraft. If you look at numbers launched the DoD is a much larger user of space. The Military has missions queued up and lauches at a rather high rate. And they are able to take advantage of this. For example GPS spacecraft are built in "blocks" of identical units. It is not quite an automotice style assembly line but they are built in batches. And then there is the comercial side of space. These guys do a number of launches too. Almost all are communications sats of some kind, direct TV broadcast or what ever. They tend to re-use designs too. But NASA is not in the business of launching more then one or two of each type of mission. When they do launch two they will order them at the same time.
My brother has the best anti-telemarketing idea. He always says "yes". "Yes I need my house painted." He makes an apointment for them to come out and gives them a time when he is not home. Causes the ideots to waste hours of their time and a few galons of gas. We should all do this.
What I do is place them on hold - forever. This wastes more of their time then if I simply hung the phone up.
Pluto is not a plent because plaets are defined as soething which "dominates" the area in which it orbits. Pluto does not do this. It shares it's space with many, many "peers"
Mars is a planet because it is by a huge margin the biggest thing in that part of the solar system. The same can not be said of Pluto.
A "mmon" is simply any natural object capured in orbit around a planet.
Actually there were uncountable numbers of "moons" right after the impact. These were really to small be even be called "moons" it was more like a cloud or a dense set of rings. Much of the young Earth was vaporized. Then over time this vapor and dust condensed into biger clumps and these into bigger ones unitl now there are just two clumps left The earth and it's present moon.
I think what this article adds is detail about that period when there were only a few clumps.
I think logically we knew that if the Erach once had uncountable trillions of specs orbiting and now has only one big one there mut have been a time when there were 1,000 and a time when there were four.
My background is in Computer Science too. 20+ years working in the field. But back in school I took some EE clasess. There is really no substitute for learning the basics and the math that goes with it. Many people see complex numbers or an integral sign and shut the book. Don't do that. You need to get through the basics of what I'd call "EE 101" at least to the point of basic AC theory and a little bit about how semiconductors work.
The ARRL publishes a "handbook" it is of course aimmed mostly at amature ("ham") radio but it has good intro chapetrs on basic theory written for a reader who has only taken math through high school and stoped short of calculus. but un-like many books it continues on to teach "real world" things like how real components differe from the ideal ones and how to solder and it has pages of data for common transisters. There are also many contruction projects with plans and photos. They publish this every year and it is bigger them many phone books. Current year handbooks are expensive but Amazon will sell older (the 2005 ed.) copies cheap
Search on the title
"The ARRL Handbook for Radio Communications"
This is such a common referance book that most libraries will have a copy.
It is geared to radio so it has chaperts on things like transmition lines and antenna theory and inpedance matching but also goes into making your own printed circuit boards and how to work an ociloscope and meter and basic eletronic trouble shooting. It is not a "text book" it is more like a compendium of articles but it is well edited as you would expect of an "85th edition" book.
The reason to seporate fiber cables is not because of EMF. The reason is so that visual inspection can take place. If the cables where layed in the same conduit how could you varify that as some point they were con cross connected. But if they are 18 inches apart over the entire run visual inspection becomes easier and certainly less costly.
One thing people fail to understand is that the cost of a system includes Design, Contruction and TEST. If the designer is smart he can greatly reduce the cost of the later two phases.
The trouble here is that these edits were likely NOT made byt "The Government" but by some low level govenment employee who was posting to the Wiki when he should have been doing something else.
Everyone works for some body. Let's say my job is at Ford and I put the wheels in F250 pickup trucks. If I post to the wiki from a computer located at the Ford plant and say "Ford makes the best trucks, Chevy sucks" is this a case of Ford promoting it's own business? I'd say not even it it came from a Ford IP address.
On the other hand what if the article was about the US DOJ itself and some DOJ employee found a technical mistake in a paragraph on the history of the DOJ. Who better to corect the error?
I think what you want to bad are self-promotion and conflicts of interrest
Why the open source drivers? I think the PC makers want to get out from under microsoft as much as or maybe even more than anyone else. With MS Windows there is no way to be "different" so people shop by price. None of them like this race to the botom. Was long as they continue to sell Windows machines they wil remain in this destrouctive race.
Microsoft's problem is that back when PCs cost $1000 charging $40 for the OS was reasonable but now that you can build a PC for $250 that $40 paymant to Microsoft is one of the mosr expensive "parts" inside the PC. I'm sure Dell and the others woud like for the OS price to fall to zero.
Business will continue to need Windows because they need Office. Most home users really don't use Office. They only run a web browser and games so there is not a good reason to have Windows. I'm sure over time the low-end PCs will loose Windows in favor of Linux or maybe BSD unless Microsoft can offer a Winows version for nearly free.
What Dell and the others are saying is that they will place "availability of Open Source divers" in the set of selection criteria.
As the title says your stereotypes wrong. It's the "gammers" who are the smelly 20-somthing year olds who have no job and live in their mom's basments. UNIX geeks are 50 and 60 year olds with long grey pony tails, They went to school at UC Barkley in the 1960 or early 70s and now drive around in expensive hybred or electric cards