The change from 60Hz BW to 59.94Hz color is a bit more complex than that. Wikipedia says:
"When a transmitter broadcasts an NTSC signal, it amplitude-modulates a radio-frequency carrier with the NTSC signal just described, while it frequency-modulates a carrier 4.5 MHz higher with the audio signal. If non-linear distortion happens to the broadcast signal, the 3.579545 MHz color carrier may beat with the sound carrier to produce a dot pattern on the screen. To make the resulting pattern less noticeable, designers adjusted the original 60 Hz field rate down by a factor of 1.001 (0.1%), to approximately 59.94 fields per second. This adjustment ensures that the sums and differences of the sound carrier and the color subcarrier and their multiples (i.e., the intermodulation products of the two carriers) are not exact multiples of the frame rate, which is the necessary condition for the dots to remain stationary on the screen, making them most noticeable."
By the way, in case I wasn't clear, I meant a 1-2 year time window for IP holders to "declare" their IP is in a standard. Standard users would still have to negotiate for licenses of declared IP, but at least they would know who to negotiate with, as opposed to the current situation where no one really knows what IP might be infringed upon by a standard.
I'm all for people making money on their intellectual property (IP). And every modern standards development organization (SDO) requires the disclosure of IP by standards setting participants.
But it is the IP held by non-participants unknowingly infringed upon by standards that are the big cause of FUD on the adoption of new standards.
ANSI is the the official U.S. representative to ISO/IEC and accreditor of US SDOs . Not all US standards become ANSI "National Standards", but many important ones do.
I believe that upon ANSI elevating a standard from one of its accredited SDOs to a National Standard, there should be a legally defined process that begins a time period wherein all IP owners must "put up or shut up" regarding the standard, i.e. they must declare whether their IP is potentially infringed by a National Standard.
After that time window is over, patent or other IP infringement cases can not be brought for the use of that IP in applications of that National Standard.
I'd be happy for that window to be 1 year or 2 years to ensure that IP holders have enough time to be able to monitor publication of National Standards and properly analyze them, but no more than that.
I'm not a WIPO or international law expert, but it might be nice to extend this to at least a certain class of ISO/IEC standards as well (but perhaps only the important ones).
If a topic would not be notable from the perspective of 100 years in the future, it should not have an article.
Then delete Linux from Wikipedia, because I can assure you that no one will give a dang about Linux 100 years from now as we teleport our brains around the cosmos using quantum computers.
Moreover, I haven't seen a Wikipedia:NoOneCares100YearsFromNow.
1) Publishing is a good thing. It brings serious cred.
2) On the other hand, what the heck is the CCSC? If you are a CS major and have actual research to publish, I'd shoot for a "real conference" by ACM, IEEE, SIGGRAPH, or the like.
3) Be prepared for potential paper rejection, because it is a fact of life.
4) If you want to go to a conference, make it one where you might meet faculty of graduate programs you are interested in, or possibly the kind of people in industry you want to be in.
5) Many conferences need student volunteers, a good thing to do to mix/mingle/learn even if you don't submit a paper.
6) Look for youth hostels (always found in major cities), or couchsurfing.org. Or try to split a room with someone, go to Kayak.com and look for the cheapest hotel in the area, Motel 6 or Super 8 is often under $50/night. Take a bus rather than plane, a great opportunity to catch up on reading/programming and cheaper.
According to this list, 2006 Virginia SAT was 512/513/500 (R/M/W) and ACT was 21.1.
US Average is 503/518/497 and 21.1. So Virginia doesn't look particularly different than the US average, a little worse at math and better at reading and writing.
SAT and ACT test results are of course highly self-selective because not every student takes them. I think more important metrics include actual drop-out rates. Virginia's graduation rate is 74%, which is near the median. Plenty of states with mandatory teacher union bargaining have lower graduation rates.
I will concur that Texas has both low SAT/ACT scores and a low graduation rate (67%)...although Newsweek's best public high school 2010 is Talented and Gifted, Dallas, TX, and #4 is Science/Engineering Magnet, Dallas, TX.
H-B Woodlawn, Arlington, VA is Newsweek's #28 top high school, and George Mason, Falls Church , VA is #45.
Wisconsin has a high graduation rate (85%) - if you are not black (Wisconsin black graduation rate is 40%, compared to 64% in Virginia and 59% in Texas).
It should be noted that public sector union bargaining is not universal in the US.
For teachers, 35 states have mandatory collective bargaining rights, 11 states permit collective bargaining (neither mandating or prohibiting), and 5 states specifically prohibit collective bargaining of teachers.
Some states have no public sector union bargaining at all.
Virginia Code 40.1-57.2 "Prohibition against collective bargaining" says: "No state, county, municipal, or like governmental officer, agent or governing body is vested with or possesses any authority to recognize any labor union or other employee association as a bargaining agent of any public officers or employees, or to collectively bargain or enter into any collective bargaining contract with any such union or association or its agents with respect to any matter relating to them or their employment or service."
Texas has government code 617.002. COLLECTIVE BARGAINING BY PUBLIC EMPLOYEES PROHIBITED. "(a) An official of the state or of a political subdivision of the state may not enter into a collective bargaining contract with a labor organization regarding wages, hours, or conditions of employment of public employees. (b) A contract entered into in violation of Subsection (a) is void. (c) An official of the state or of a political subdivision of the state may not recognize a labor organization as the bargaining agent for a group of public employees."
The article fails to mention that the areas closest to the ear are also the areas associated with speech and auditory processing, but the figure in the NYT story is very unclear about the specific location in which the "increased metabolism" occurs.
The procedure was "Cell phones were placed on the left and right ears and positron emission tomography with (18F)fluorodeoxyglucose injection was used to measure brain glucose metabolism twice, once with the right cell phone activated (sound muted) for 50 minutes (âoeonâ condition) and once with both cell phones deactivated (âoeoffâ condition). "
I don't understand why they only turned on the right cell phone RF. It seems to me that you would want to randomize whether it was the right or left cell phone.
I personally am not too worried about the results of this study, but it is a bit odd and some more work should be done.
Groupon seems to me like one of those ideas we'll look back in retrospect and think, "Why was it worth that much? It was so obvious!"
It was a great idea, but there is no intellectual property to it except for a brand name. There are already hundreds of Groupon clones. At least a search engine needs an algorithm, a social network needs a critical mass of users, but what does a Groupon need? A website and some sales staff.
If you'd like to set up your own Groupon clone, go over to Chompon and they will white-label one for you.
"[land required to] minimize the effects of one turbine reducing energy to other turbines is 1.17% of the global land area. "
Global land area is 148,940,000 km^2. 1.17% of that is 1,742,598 km^2. That is about the size of Libya, or slightly larger than Iran or Mongolia, and much larger than Peru, South Africa, Egypt, or Venezuela.
It is larger than the largest national park in the world (Northeast Greenland National Park @ 972,000 km^2), and of course far larger than any US national park. It is 127 Death Valleys, 194 Yellowstones, or 565 Yosemites.
Good luck with the environmental impact statement on that!
Regarding "Most of our industry and manufacturing jobs have already left the country", you should be aware that US manufacturing output reached an all-time high in 2008, and although our most recent economic recession did reduce output, it is back to 2002 levels.
It is true that US manufacturing jobs are being reduced. However US manufacturing industry is doing OK due to productivity increases (mainly automation). This is similar to what happened with agriculture, we went from a country where 80% of people farmed, to one where 2% of people farm yet they produce far more food with their motorized combines and GPS-aided fertilizer applications than when 80% of people hooked up their plow to their ox.
"The problem is, manufacturing brings in money, consuming loses it." You really need to read Adam Smith's "The Wealth of Nations", because he debunked this back in 1775. A nation's wealth is not the quantity of gold and silver in its vaults (achieved by trade), but the total of its production and commerce.
Most of US GDP consists of creation of wealth inside the country. US GDP in 2010 was $14.7 trillion. The whole 2010 trade deficit was $500 billion, about 3% of US GDP (which is a bit of double counting, because the trade deficit is subtracted from US production to arrive at the GDP number). And in truth, about half the US trade deficit is due to petroleum imports.
"it gets to the point where more and more people in the US are unable to afford to purchase these goods."
Yet US average incomes are going up (and medians are at least stable), so apparently you are wrong.
If the U.S. manufacturing sector were a separate country, it would be tied with Germany as the world's third largest economy. It would also be larger than the entire economies of India and Russia combined.
"The best way to make money is to make something." I'd argue the best way to make money is to design something. Take the iPod, designed in the US by Apple, using some parts designed in the US but built in non-Chinese Asian factories, for final assembly in China. About one half the retail price of $299 from the sale of an iPod goes to American companies, mainly for design.
Now I will agree that I am concerned about the ability of the US labor force to be able to adopt the skills required to become designers. However, they will either be competing with cheap workers from developing countries, or they will be competing with robots for manufacturing jobs, so we better figure out how to educate our people better.
If anyone is to blame for the sad state of education in America, it the parents that need to take the blame. But that won't happen because the parents are the tax payers and the voters. How do you hold them accountable?
Perhaps you should make the parents pick and choose schools and then have the parents pay for school (under pain of legal threat), rather than creating a government monopoly entitlement.
If parents are laying down their own hard-earned money for school, I suspect they will become more involved. Or at least they might choose to send their kids to "easy school" while those who actually care about education can go to "actual school" without the negative distractions.
Religious people love to point out small errors in the theory of evolution and claim that all must be wrong, that's an inherent property of blind faith (you either believe the whole thing no matter how ridiculous or you have to abandon your whole faith, it's an all-or-nothing game).
This is the same way statists point out minor issues with the emergent properties of free markets, ignoring that blind faith in government also has its problems.
The US can be a manufacturing powerhouse again tomorrow - All we have to do is just roll back all the ridiculous regulations
I agree that if we 1) lifted the minimum wage and 2) lifted limitations on immigration that we could have the same kind of low-productivity/low-pay factories we find in developing countries.
However I really doubt we will ever increase the number of workers in high-productivity/high-pay manufacturing positions simply because automation and machinery mean you need very few workers to achieve this.
Physical stuff can be built by robots. Ideas still need people to build them. For now.
"My bill returns the broadband cop back to the beat"
Anyone who has any legal knowledge knows that you never talk to the cops. It can only get you in trouble.
The Internet is the great thing it is today because we fought and fought and fought and fought against its regulation. Now you ignorant people (ignorant of network architecture, business, law, government and economics) want to give the Federal government the tools to destroy it (and by destroy, I don't just mean the government causing problems, but I also mean the incumbent ISPs will use the laws you write for them for their own benefit against their competitors to make the Internet a worse place). Please don't!
If you don't like your local end-user ISP franchises, please visit your local franchise board meeting next time. Talk to your local board members. Ask hard questions. But stay out of Washington, DC!
You sure can't support an economy entirely on manufacturing jobs.
There is an evolution to things. In the 1800's over 80% of Americans were agricultural workers. Mechanization starting in the 1920's has reduced that down to a very small number today (~3%). Yet total agricultural output continued to rise because the few employees left were made highly productive through farm machinery. Many agricultural workers (like the "Okies" of Grapes of Wrath) had to move, change their profession, and many went into manufacturing.
So by 1950, 30% of US jobs were in manufacturing. However that percentage immediately began going down, to perhaps about 8% today, and will continue to go down to a small number.
So instead we have new jobs in the US today, the largest growth sectors being education, health care, and information technology.
Lack of closed caption support doesn't help either.
Subtitling for foreign languages are done on international 3D cinema distribution - carefully placed by hand for now (see the Nav'i English translations in Avatar, for example).
There is an expectation that Closed Captions for the hearing impaired will be delivered on 3D optical media with appropriate depth metadata as well.
According to Prof. Martin Banks, Professor of Optometry and Vision Science at U.C. Berkeley, the vergence-accommodation conflict should be kept at less than ½ to 1/3 diopters for the majority of a 3D viewing experience to avoid discomfort and fatigue.
Which means if you are sitting ~16 feet from the screen, things can come ~10 feet out of the screen without you having any discomfort or fatigue. That is plenty of depth budget for most 3D movies. Thus, focus/vergence mismatch is not a real problem for stereoscopic 3D cinema.
Now if you are ~20 inches from the screen, things can only come out ~3 inches out of the screen before potential discomfort or fatigue, so vergence/focus mismatch is a real problem for small screens. Thus personal gaming devices, computers, and televisions will need careful depth budgeting in stereoscopic 3D.
"Super multiview" non-glasses 3D displays (generally with >32 views) where more than one parallax image is projected into your pupil at a time can force you to focus on the virtual 3D image where your eyes converge (this is how a hologram or the real world works, only they have nearly infinite number of parallax views).
Slashdot Mirror
The change from 60Hz BW to 59.94Hz color is a bit more complex than that. Wikipedia says:
"When a transmitter broadcasts an NTSC signal, it amplitude-modulates a radio-frequency carrier with the NTSC signal just described, while it frequency-modulates a carrier 4.5 MHz higher with the audio signal. If non-linear distortion happens to the broadcast signal, the 3.579545 MHz color carrier may beat with the sound carrier to produce a dot pattern on the screen. To make the resulting pattern less noticeable, designers adjusted the original 60 Hz field rate down by a factor of 1.001 (0.1%), to approximately 59.94 fields per second. This adjustment ensures that the sums and differences of the sound carrier and the color subcarrier and their multiples (i.e., the intermodulation products of the two carriers) are not exact multiples of the frame rate, which is the necessary condition for the dots to remain stationary on the screen, making them most noticeable."
Nobody does theatrical reruns any more. Will theaters even run the thing? It's just fake 3D, after all; the source material was filmed in 2D.
"Nightmare Before Christmas 3D" Worldwide Gross $26 million. And that was before the big Avatar-related push to get 3D projectors into cinemas.
Since the 2D->3D on a movie is $6-$18 million, there is plenty of opportunity for profit even for a movie that doesn't have a huge box office.
By the way, in case I wasn't clear, I meant a 1-2 year time window for IP holders to "declare" their IP is in a standard. Standard users would still have to negotiate for licenses of declared IP, but at least they would know who to negotiate with, as opposed to the current situation where no one really knows what IP might be infringed upon by a standard.
I am sure Gaddafi could, at any time, have Libya Telecom & Technology "turn off" the .ly TLD by contacting every root server.
Not sure if/why he'd want to do that, but I think one has to recognize that a TLD in a country run by a dictator is a serious business risk.
[this is my personal viewpoint]
I'm all for people making money on their intellectual property (IP). And every modern standards development organization (SDO) requires the disclosure of IP by standards setting participants.
But it is the IP held by non-participants unknowingly infringed upon by standards that are the big cause of FUD on the adoption of new standards.
ANSI is the the official U.S. representative to ISO/IEC and accreditor of US SDOs . Not all US standards become ANSI "National Standards", but many important ones do.
I believe that upon ANSI elevating a standard from one of its accredited SDOs to a National Standard, there should be a legally defined process that begins a time period wherein all IP owners must "put up or shut up" regarding the standard, i.e. they must declare whether their IP is potentially infringed by a National Standard.
After that time window is over, patent or other IP infringement cases can not be brought for the use of that IP in applications of that National Standard.
I'd be happy for that window to be 1 year or 2 years to ensure that IP holders have enough time to be able to monitor publication of National Standards and properly analyze them, but no more than that.
I'm not a WIPO or international law expert, but it might be nice to extend this to at least a certain class of ISO/IEC standards as well (but perhaps only the important ones).
If a topic would not be notable from the perspective of 100 years in the future, it should not have an article.
Then delete Linux from Wikipedia, because I can assure you that no one will give a dang about Linux 100 years from now as we teleport our brains around the cosmos using quantum computers.
Moreover, I haven't seen a Wikipedia:NoOneCares100YearsFromNow.
1) Publishing is a good thing. It brings serious cred.
2) On the other hand, what the heck is the CCSC? If you are a CS major and have actual research to publish, I'd shoot for a "real conference" by ACM, IEEE, SIGGRAPH, or the like.
3) Be prepared for potential paper rejection, because it is a fact of life.
4) If you want to go to a conference, make it one where you might meet faculty of graduate programs you are interested in, or possibly the kind of people in industry you want to be in.
5) Many conferences need student volunteers, a good thing to do to mix/mingle/learn even if you don't submit a paper.
6) Look for youth hostels (always found in major cities), or couchsurfing.org. Or try to split a room with someone, go to Kayak.com and look for the cheapest hotel in the area, Motel 6 or Super 8 is often under $50/night. Take a bus rather than plane, a great opportunity to catch up on reading/programming and cheaper.
According to this list, 2006 Virginia SAT was 512/513/500 (R/M/W) and ACT was 21.1.
US Average is 503/518/497 and 21.1. So Virginia doesn't look particularly different than the US average, a little worse at math and better at reading and writing.
SAT and ACT test results are of course highly self-selective because not every student takes them. I think more important metrics include actual drop-out rates. Virginia's graduation rate is 74%, which is near the median. Plenty of states with mandatory teacher union bargaining have lower graduation rates.
I will concur that Texas has both low SAT/ACT scores and a low graduation rate (67%)...although Newsweek's best public high school 2010 is Talented and Gifted, Dallas, TX, and #4 is Science/Engineering Magnet, Dallas, TX.
H-B Woodlawn, Arlington, VA is Newsweek's #28 top high school, and George Mason, Falls Church , VA is #45.
Wisconsin has a high graduation rate (85%) - if you are not black (Wisconsin black graduation rate is 40%, compared to 64% in Virginia and 59% in Texas).
It should be noted that public sector union bargaining is not universal in the US.
For teachers, 35 states have mandatory collective bargaining rights, 11 states permit collective bargaining (neither mandating or prohibiting), and 5 states specifically prohibit collective bargaining of teachers.
Some states have no public sector union bargaining at all.
Virginia Code 40.1-57.2 "Prohibition against collective bargaining" says: "No state, county, municipal, or like governmental officer, agent or governing body is vested with or possesses any authority to recognize any labor union or other employee association as a bargaining agent of any public officers or employees, or to collectively bargain or enter into any collective bargaining contract with any such union or association or its agents with respect to any matter relating to them or their employment or service."
Texas has government code 617.002. COLLECTIVE BARGAINING BY PUBLIC EMPLOYEES PROHIBITED. "(a) An official of the state or of a political subdivision of the state may not enter into a collective bargaining contract with a labor organization regarding wages, hours, or conditions of employment of public employees. (b) A contract entered into in violation of Subsection (a) is void. (c) An official of the state or of a political subdivision of the state may not recognize a labor organization as the bargaining agent for a group of public employees."
"When Egypt took down the internet, wasn't that just a rule in a firewall, too?"
No, it was the Egyptian ISPs withdrawing their BGP routes under threats from the Mubarak government.
The article fails to mention that the areas closest to the ear are also the areas associated with speech and auditory processing, but the figure in the NYT story is very unclear about the specific location in which the "increased metabolism" occurs.
The procedure was "Cell phones were placed on the left and right ears and positron emission tomography with (18F)fluorodeoxyglucose injection was used to measure brain glucose metabolism twice, once with the right cell phone activated (sound muted) for 50 minutes (âoeonâ condition) and once with both cell phones deactivated (âoeoffâ condition). "
I don't understand why they only turned on the right cell phone RF. It seems to me that you would want to randomize whether it was the right or left cell phone.
I personally am not too worried about the results of this study, but it is a bit odd and some more work should be done.
Groupon seems to me like one of those ideas we'll look back in retrospect and think, "Why was it worth that much? It was so obvious!"
It was a great idea, but there is no intellectual property to it except for a brand name. There are already hundreds of Groupon clones. At least a search engine needs an algorithm, a social network needs a critical mass of users, but what does a Groupon need? A website and some sales staff.
If you'd like to set up your own Groupon clone, go over to Chompon and they will white-label one for you.
From the report:
"[land required to] minimize the effects of one turbine reducing energy to other turbines is 1.17% of the global land area. "
Global land area is 148,940,000 km^2. 1.17% of that is 1,742,598 km^2. That is about the size of Libya, or slightly larger than Iran or Mongolia, and much larger than Peru, South Africa, Egypt, or Venezuela.
It is larger than the largest national park in the world (Northeast Greenland National Park @ 972,000 km^2), and of course far larger than any US national park. It is 127 Death Valleys, 194 Yellowstones, or 565 Yosemites.
Good luck with the environmental impact statement on that!
Regarding "Most of our industry and manufacturing jobs have already left the country", you should be aware that US manufacturing output reached an all-time high in 2008, and although our most recent economic recession did reduce output, it is back to 2002 levels.
It is true that US manufacturing jobs are being reduced. However US manufacturing industry is doing OK due to productivity increases (mainly automation). This is similar to what happened with agriculture, we went from a country where 80% of people farmed, to one where 2% of people farm yet they produce far more food with their motorized combines and GPS-aided fertilizer applications than when 80% of people hooked up their plow to their ox.
"The problem is, manufacturing brings in money, consuming loses it." You really need to read Adam Smith's "The Wealth of Nations", because he debunked this back in 1775. A nation's wealth is not the quantity of gold and silver in its vaults (achieved by trade), but the total of its production and commerce.
Most of US GDP consists of creation of wealth inside the country. US GDP in 2010 was $14.7 trillion. The whole 2010 trade deficit was $500 billion, about 3% of US GDP (which is a bit of double counting, because the trade deficit is subtracted from US production to arrive at the GDP number). And in truth, about half the US trade deficit is due to petroleum imports.
"it gets to the point where more and more people in the US are unable to afford to purchase these goods."
Yet US average incomes are going up (and medians are at least stable), so apparently you are wrong.
If the U.S. manufacturing sector were a separate country, it would be tied with Germany as the world's third largest economy. It would also be larger than the entire economies of India and Russia combined.
"The best way to make money is to make something." I'd argue the best way to make money is to design something. Take the iPod, designed in the US by Apple, using some parts designed in the US but built in non-Chinese Asian factories, for final assembly in China. About one half the retail price of $299 from the sale of an iPod goes to American companies, mainly for design.
Now I will agree that I am concerned about the ability of the US labor force to be able to adopt the skills required to become designers. However, they will either be competing with cheap workers from developing countries, or they will be competing with robots for manufacturing jobs, so we better figure out how to educate our people better.
I can double the number of IPv4 addressable machines.
UDP and TCP ports 1-512 will now be one machine, and ports 513 and higher will be another machine.
I don't dispute that you can live without meat
I do.
You are may want to talk to the >300 million strict vegetarians in India...
If anyone is to blame for the sad state of education in America, it the parents that need to take the blame. But that won't happen because the parents are the tax payers and the voters. How do you hold them accountable?
Perhaps you should make the parents pick and choose schools and then have the parents pay for school (under pain of legal threat), rather than creating a government monopoly entitlement.
If parents are laying down their own hard-earned money for school, I suspect they will become more involved. Or at least they might choose to send their kids to "easy school" while those who actually care about education can go to "actual school" without the negative distractions.
Religious people love to point out small errors in the theory of evolution and claim that all must be wrong, that's an inherent property of blind faith (you either believe the whole thing no matter how ridiculous or you have to abandon your whole faith, it's an all-or-nothing game).
This is the same way statists point out minor issues with the emergent properties of free markets, ignoring that blind faith in government also has its problems.
Telecoms and ISPs are now oligopolies, not competitive market, which means my local franchise board has about 3 equally bad choices.
So you've actually been talking with your local franchise board members about the problems you have with your ISPs?
The US can be a manufacturing powerhouse again tomorrow - All we have to do is just roll back all the ridiculous regulations
I agree that if we 1) lifted the minimum wage and 2) lifted limitations on immigration that we could have the same kind of low-productivity/low-pay factories we find in developing countries.
However I really doubt we will ever increase the number of workers in high-productivity/high-pay manufacturing positions simply because automation and machinery mean you need very few workers to achieve this.
Physical stuff can be built by robots. Ideas still need people to build them. For now.
"My bill returns the broadband cop back to the beat"
Anyone who has any legal knowledge knows that you never talk to the cops. It can only get you in trouble.
The Internet is the great thing it is today because we fought and fought and fought and fought against its regulation. Now you ignorant people (ignorant of network architecture, business, law, government and economics) want to give the Federal government the tools to destroy it (and by destroy, I don't just mean the government causing problems, but I also mean the incumbent ISPs will use the laws you write for them for their own benefit against their competitors to make the Internet a worse place). Please don't!
If you don't like your local end-user ISP franchises, please visit your local franchise board meeting next time. Talk to your local board members. Ask hard questions. But stay out of Washington, DC!
You sure can't support an economy entirely on manufacturing jobs.
There is an evolution to things. In the 1800's over 80% of Americans were agricultural workers. Mechanization starting in the 1920's has reduced that down to a very small number today (~3%). Yet total agricultural output continued to rise because the few employees left were made highly productive through farm machinery. Many agricultural workers (like the "Okies" of Grapes of Wrath) had to move, change their profession, and many went into manufacturing.
So by 1950, 30% of US jobs were in manufacturing. However that percentage immediately began going down, to perhaps about 8% today, and will continue to go down to a small number.
So instead we have new jobs in the US today, the largest growth sectors being education, health care, and information technology.
Is there a limit to how far BACK a 3d display can comfortably display? Or is it infinite?
Once you are >=4 meters in front of the screen, there is no limit to how far back into the screen a virtual stereoscopic image can comfortably be.
Lack of closed caption support doesn't help either.
Subtitling for foreign languages are done on international 3D cinema distribution - carefully placed by hand for now (see the Nav'i English translations in Avatar, for example).
There is an expectation that Closed Captions for the hearing impaired will be delivered on 3D optical media with appropriate depth metadata as well.
From this reference:
According to Prof. Martin Banks, Professor of Optometry and Vision Science at U.C. Berkeley, the vergence-accommodation conflict should be kept at less than ½ to 1/3 diopters for the majority of a 3D viewing experience to avoid discomfort and fatigue.
Which means if you are sitting ~16 feet from the screen, things can come ~10 feet out of the screen without you having any discomfort or fatigue. That is plenty of depth budget for most 3D movies. Thus, focus/vergence mismatch is not a real problem for stereoscopic 3D cinema.
Now if you are ~20 inches from the screen, things can only come out ~3 inches out of the screen before potential discomfort or fatigue, so vergence/focus mismatch is a real problem for small screens. Thus personal gaming devices, computers, and televisions will need careful depth budgeting in stereoscopic 3D.
"Super multiview" non-glasses 3D displays (generally with >32 views) where more than one parallax image is projected into your pupil at a time can force you to focus on the virtual 3D image where your eyes converge (this is how a hologram or the real world works, only they have nearly infinite number of parallax views).