Any attempt to enter the market without a license would bring down Intel legal on them like flying monkeys blackening the sky.
How is it that AMD is able to release x86 chips, but nVidia can't without a license from Intel? Why would nVidia need AMD to be gracious?
The chip business is a mine field of patents. You really can't build much of anything without stepping on someone else's patent. AMD has been the processor business long enough that, should Intel file suit for patent infringement, AMD could fire right back. Sort of a commercial form of Mutualy Assured Destruction. As a result, the two companies have broad cross licensing agreements in place so they don't waste their money of futile patent fights. AMD also has specific court case history dating from 80's giving it special rights in building Intel compatible processors.
In the 90's, Cyrix and Nexgen tried to build x86 processors. They ultimately folded into National Semiconductor and AMD, respectively, because, without the protection provided by the larger firms broad cross-licensing agreements, the startup couldn't build anything.
Nvidia is a fair bit larger and more established then Cyrix or Nexgen. They might have a big enough patent portfolio to keep Intel and it's lawyer's honest. Iffy, though.
"White flight" isn't really about white people leaving. It's about wealthy and middle class people abandoning neighborhoods and taking their resources with them, leaving only the poor behind.
If this drug works as advertised & has no dangerous side effects, why wouldn't *everyone* including athletes take it? I realize that this would be an unfair advantage in the present, but I'm talking about after 20+ years of testing.
It is the inevitable outcome of making a global change to a complex system. Even if all this drug does is globally increase muscle tone (unlikely), then you have to be concerned about increased muscle tone in places where you don't want it. Like the smooth muscles that control movement in your digestive tract. Hello constipation/diarrhea.
For the longest time Usenet was top dog. For any given topic, the largest and most informed chatter was on Usenet. And of course, all the other topics were right next door. Life was grand.
That was technically savvy people used the Internet. The Web was either just another protocol or hadn't been invented yet.
Trouble came when a generation of Internet users came to view Internet == WWW. Usenet wasn't the web. It didn't work like the Web. They didn't understand Usenet so they didn't use it. Sure, there were Web interfaces to Usenet but they always seem to combine the worst features of Usenet and Web forums. Most everyone learns to hate them in time.
At first, the Usenet die hards resisted. After all, web forums sucked and the most knowledgeable people were still on Usenet. But after a while, the Web forums became bigger than Usenet. They still sucked but if you wanted an answer that's where you needed to go.
These days, Usenet isn't top dog in much of anything. I still run a private news server but I find I read it less and less. My favorite topics, old and new, have mostly moved to web forums.
Except, of course, that Ace is replaced by other Rimmers from parallel universes, not by his son. And when the Rimmer we know and love became Ace, that was probably the end of the chain, as by that point he was a hard-light hologram -- pretty much impossible to kill.
The previous Ace was also a hard light hologram. Hard to kill, maybe, but not invulnerable. That's why he recruited Rimmer. His emitter was severely damaged and would soon fail altogether.
Pricewatch, Pricegrabber, and Google Product Search are much more effective for comparing and buying fixed price goods than eBay. The exception is that sometimes (not always, but sometimes) eBay is better for small retailers selling unusual goods.
But it sounds like eBay is pushing them out. So, why again, would one use eBay?
2) Cars require more resources to run per mile (not just in terms of the fossil fuels themselves vs. human energy, but also in terms of the energy required to transport those fossil fuels around the world [hint, it's much greater than the energy used to bring you a peach or two] - 50% of the world's energy is burned just in transporting OTHER energy around the planet).
I agree entirely with (1), (3), and (4). If you believe (2), you're bad at math, eating crap, or are paying for parking (as somebody else pointed out). That was the only point I was trying to make. Sorry if that wasn't clear.
I skate 5 miles each way to work. That's roughly equivalent to eight miles each way on a bicycle. I eat lunch with my car-commuting co-workers regularly so I have a pretty good idea how much they eat. They eat about the same as I do. Some a little less (No mayo, no cheese), some a bit more (make that a footlong). I'm not sure how energy is balanced. Maybe the work out at the gym. Maybe they just get fat and need more energy to move around. Whatever the reason, they aren't able to translate that drive into a smaller food bill. I'm over 6' so it's not a size issue.
Initially, you could post with any name you wanted. No login. It was kind of reckless and cool, that way. Then they decided that this wasn't so good and created logins. Many of us, though, didn't bite. We kept doing it the old way. Finally, the type in field for name was replaced by "Anonymous Coward".
Reluctantly, I and, I'm sure, many other long time users created logins. But, by then the suckups^W honored elders had taken all the low numbers.
They just aren't very important distinctions anymore. Both refer to the instruction sets, not the internal workings. x86 was CISC in 1978 and it's still CISC in 2008. ARM was RISC in 1988 and still RISC in 2008. AMD64 is a border line case.
People get confused with the way current x86's break apart instructions into microops. That's doesn't make it RISC. That just make it microcoded. That's how most CISC processors work. RISC process rarely use anything like microcode and when they do, it is looked upon as very unRISCy.
Today, the internals of RISC and CISC processors are so complex that the almighty instruction set processing is barely a shim. There are still some advantages to RISC but they are dwarfed by out-of-order execution, vector extensions, branch prediction and other enormously complex features of modern processors.
Granted, you won't get as many shots as Windows 95. But, you know, Datastorm is registered trademark. Launching Procomm should keep the lawyers at bay.
I'm pretty I still have a unopened box for Procomm Plus for Windows 1.0 if you need it.
Looks like a good method, if you ask me. I'm amazed that the OP thought that rejecting was a good idea while claiming that Google's method enabled dictionary attacks. Rejecting makes dictionary attacks much easier. No need to parse or even receive bounces. Validation is provided promptly in an easy to parse return code.
The article didn't discuss any absolute efficiency numbers. It only said the new tech was much more efficient than thermoelectric generators, whose efficiency is abysmal. There is no mention of having efficiency better or even comparable to a steam turbine.
Steam turbines are mechanically complicated and smell of old tech but they are actually rather efficient. Large steam turbines have thermodynamic efficiency in the 90% range. I rather doubt this new nuclear photocell is anywhere close.
One problem with a draconian cut-off like this is that people can be affected who are totally unaware of the problem.
Somewhat recently, I started using a perl version of rblcheck in some of my procmail recipes. A lengthy list of rbl's is embedded in the source code. I removed some obvious losers but was unaware until reading this article that ordb was a problem. How many people out there are using this script and are unaware that a bomb like this is lurking in the code? How many are using it and don't even remember that they even use this script?
2) an in-sink dishwasher, where I can simply pile my dirty dishes into the sink, slide the top closed, and let it do it's thing without me having to clean by hand or pre-scrub and load them into a separate unit.
Sounds like user error to me. If you have a dishwasher, there is no need to push dishes in the sink. Take them directly from the table on wherever they were into the dishwasher. If you have to pre-scrub them, that's a call for a better dishwasher, not an in-sink dishwasher. (Why would it be any easier, just because it happens in the sink?)
I am constantly irritated at my housemate for this. We have a dishwasher and when I need to use the sink, I always have to move his dishes from the sink to the dishwasher. It makes no sense. He saves almost no effort and, between the two of us, the work load is nearly doubled.
Now what would be useful is a self-emptying dishwasher. Some sort of robot to move all the dishes into the cabinets once the dishes are clean. Inevitably, the one time when you are really in a hurry, the dishwasher is full of clean dishes. My housemate puts his dishes in the sink even the dishwasher is empty.
Which countries are those? Even in Egypt, where they smoke heavily and everywhere, I never had problems in Internet cafes. Food cafes, sure but cyber cafes? No so much.
Thailand is not the world. I traveled Honduras over Christmas time. Internet in Honduras in 2007 was significantly more primitive than Internet in Thailand in 2003. Old, old, machines. Bad internet links.
Backing up images is a bit tricky when you have no laptop and the internet cafe's have no card readers. It's trivial if you have a properly equipped laptop. You don't keep the backup on your laptop. That would be stupid. You mail it home. My travelogs get emailed to multiple people. No chance that they get lost.
For me, personally, hand writing the travelog is a non-starter. My hand writing can not keep pace with my thoughts and it is doubtful I could read the result if I tried. Even typing is a challenge, but at least there is a fighting chance that results will reach the page and be decipherable.
I've already stated that if you not carrying much in the way of camera gear, then the jury is still out. But don't equate serious camera gear with "professional". Lots of people carry SLR's with multiple lenses because they like to take good pictures and point and shoots just don't cut it. If writing and photography do not mean much to you when you travel then, by all means, leave the computer at home.
What 99% of the people do is not important. What is important is choosing the right tools for what *you* do.
I've traveled with conventional (heavy) laptop and with none. There are significant downsides to both approaches.
Laptops are indeed heavy, bulky, fragile, and theft prone. But...
Internet cafes in the third world do not have the bandwidth to backup your images. They frequently lack the ports and they almost always lack the software. They are frequently not handy, not available, or not working when you want to write. *Everything* is subject to loss/theft. How do you propose to backup that paper notebook? When do you propose to transcribe months of chicken scratch into electronic form?
An EEEpc is about the right balance if you are already committed to carrying real camera gear. A weather sealed DSLR is nearly $1000. The lenses are more fragile then the EEEpc.
If all you are carrying is a simple point and shoot, then the jury is still out.
On the subject of preserving images, I am surprised that everyone seems to want to put all their eggs in one basket: bad idea. If traveling long term, backup your images periodically and mail the backup home. If the backup is lost in the mail, you still have the original in your pack. If you pack is stolen or the media is damaged, you still have the backups. It's getting to the point where the cost of flash to mail home is not a big deal. Still, if you find yourself some place where you can burn a DVD, go for it!
Being more selective doesn't mean the school is any better. It means that the students are better. Bragging about how selective you are is really just an appeal to popularity. "All these smart people must be coming here for a reason. Rather than do my own homework, I will assume that these people have done theres and that it must be a really good school". Crappy reasoning for an institution that is supposed to train people to think.
This could be a little disturbing, if it works. How long before the technology trickles down to the identity thief around the corner? We are now told to shred everything. What happens when shredding is not enough?
If you're far enough back from the light that coasting will make any difference, then they'd have to have their blinker on like 12 seconds before they got to the turn. No one will ever do that.
I'm not entirely sure whether you are being sarcastic or serious. In case you are serious...
I see people cars all the time, in stopped traffic, several cars back from the intersection with their turn signals on. That's a lot more than 12 seconds. I also see people wait until the last second to signal or not signal at all. Encouraging proper turn signal usage seems a good thing all by itself. I might do it even it didn't save gas.
If someone needs to get to the left turn pocket or intends to make a right turn on red, then their turn signal should be on. If it isn't, then any delay caused by me coasting to the light is their own fault.
take a notepad and a couple pens and just write out your adventure and just type it up later. Not reason to dwell on your prose, write done, what, when, where, why, etc. You can fill back in the details later.
No, actually, you can't. The mood is gone. The details are gone. The time and motivation to attempt to dredge up the remains of those memories will never appear. If you intend to write about your experiences in anything more than blur, you need to write about within days of when it happened. This takes time and is generally a pain in the butt. One can reasonably ask if all this writing and blogging is worth it.
Carrying a laptop is a pain the butt. It's a bit like carrying an expensive camera. It's worth it only if you are really going to use it. That means spending 1/4 or more of your trip writing about your trip. If aren't going to do that then don't bring a laptop. And never bring a brand new, prized machine. Never bring anything that you can't bear to lose.
A good intermediate step is a PDA with a folding keyboard. Much smaller, lighter, and cheaper than a laptop and you can still do a full writeup from wherever you are. Not so good for editing photos but for text it is fine.
Sony tried this years ago with their Vaio sub-notebook line of computers. [snip] It's only problem was that it just wasn't large enough to be practical. You can't really type notes on a keyboard of that size.
And yet, a folding keyboard, when attached to a Palm III, is quite usable for taking notes, writing travelogues, etc. It mostly suffers from the limitations of the Palm: very limited and volatile mass storage, no networking.
But the folding idea allows for a reasonable sized keyboard to fit in a small space. Whey haven't subnotebook vendors picked up the idea? The device only needs to be ultra small when carried.
Ben: You will go to the Dagobah system. There you will learn from Yoda, the Jedi Master who instructed me.
I think that was a rather big oversight on the part of Lucas, considering the Jedi Master who instructed Ben was Qui-Gonn, not Yoda. That one might be a little more difficult to explain away.
This is true, from a certain point of view.
Yoda almost certainly did instruct Obi-Wan when he was very young. We see one such a group session in _Attack of the Clones_. Luke needed to start from the basics so, in fact, Yoda's instructions may be more relevent then what Obi-Wan learned from Qui-Gonn.
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How is it that AMD is able to release x86 chips, but nVidia can't without a license from Intel? Why would nVidia need AMD to be gracious?
The chip business is a mine field of patents. You really can't build much of anything without stepping on someone else's patent. AMD has been the processor business long enough that, should Intel file suit for patent infringement, AMD could fire right back. Sort of a commercial form of Mutualy Assured Destruction. As a result, the two companies have broad cross licensing agreements in place so they don't waste their money of futile patent fights. AMD also has specific court case history dating from 80's giving it special rights in building Intel compatible processors.
In the 90's, Cyrix and Nexgen tried to build x86 processors. They ultimately folded into National Semiconductor and AMD, respectively, because, without the protection provided by the larger firms broad cross-licensing agreements, the startup couldn't build anything.
Nvidia is a fair bit larger and more established then Cyrix or Nexgen. They might have a big enough patent portfolio to keep Intel and it's lawyer's honest. Iffy, though.
"White flight" isn't really about white people leaving. It's about wealthy and middle class people abandoning neighborhoods and taking their resources with them, leaving only the poor behind.
If this drug works as advertised & has no dangerous side effects, why wouldn't *everyone* including athletes take it? I realize that this would be an unfair advantage in the present, but I'm talking about after 20+ years of testing.
It is the inevitable outcome of making a global change to a complex system. Even if all this drug does is globally increase muscle tone (unlikely), then you have to be concerned about increased muscle tone in places where you don't want it. Like the smooth muscles that control movement in your digestive tract. Hello constipation/diarrhea.
For the longest time Usenet was top dog. For any given topic, the largest and most informed chatter was on Usenet. And of course, all the other topics were right next door. Life was grand.
That was technically savvy people used the Internet. The Web was either just another protocol or hadn't been invented yet.
Trouble came when a generation of Internet users came to view Internet == WWW. Usenet wasn't the web. It didn't work like the Web. They didn't understand Usenet so they didn't use it. Sure, there were Web interfaces to Usenet but they always seem to combine the worst features of Usenet and Web forums. Most everyone learns to hate them in time.
At first, the Usenet die hards resisted. After all, web forums sucked and the most knowledgeable people were still on Usenet. But after a while, the Web forums became bigger than Usenet. They still sucked but if you wanted an answer that's where you needed to go.
These days, Usenet isn't top dog in much of anything. I still run a private news server but I find I read it less and less. My favorite topics, old and new, have mostly moved to web forums.
Except, of course, that Ace is replaced by other Rimmers from parallel universes, not by his son. And when the Rimmer we know and love became Ace, that was probably the end of the chain, as by that point he was a hard-light hologram -- pretty much impossible to kill.
The previous Ace was also a hard light hologram. Hard to kill, maybe, but not invulnerable. That's why he recruited Rimmer. His emitter was severely damaged and would soon fail altogether.
Pricewatch, Pricegrabber, and Google Product Search are much more effective for comparing and buying fixed price goods than eBay. The exception is that sometimes (not always, but sometimes) eBay is better for small retailers selling unusual goods.
But it sounds like eBay is pushing them out. So, why again, would one use eBay?
2) Cars require more resources to run per mile (not just in terms of the fossil fuels themselves vs. human energy, but also in terms of the energy required to transport those fossil fuels around the world [hint, it's much greater than the energy used to bring you a peach or two] - 50% of the world's energy is burned just in transporting OTHER energy around the planet).
I agree entirely with (1), (3), and (4). If you believe (2), you're bad at math, eating crap, or are paying for parking (as somebody else pointed out). That was the only point I was trying to make. Sorry if that wasn't clear.
I skate 5 miles each way to work. That's roughly equivalent to eight miles each way on a bicycle. I eat lunch with my car-commuting co-workers regularly so I have a pretty good idea how much they eat. They eat about the same as I do. Some a little less (No mayo, no cheese), some a bit more (make that a footlong). I'm not sure how energy is balanced. Maybe the work out at the gym. Maybe they just get fat and need more energy to move around. Whatever the reason, they aren't able to translate that drive into a smaller food bill. I'm over 6' so it's not a size issue.
Initially, you could post with any name you wanted. No login. It was kind of reckless and cool, that way. Then they decided that this wasn't so good and created logins. Many of us, though, didn't bite. We kept doing it the old way. Finally, the type in field for name was replaced by "Anonymous Coward".
Reluctantly, I and, I'm sure, many other long time users created logins. But, by then the suckups^W honored elders had taken all the low numbers.
They just aren't very important distinctions anymore.
Both refer to the instruction sets, not the internal workings. x86 was CISC in 1978 and it's still CISC in 2008. ARM was RISC in 1988 and still RISC in 2008. AMD64 is a border line case.
People get confused with the way current x86's break apart instructions into microops. That's doesn't make it RISC. That just make it microcoded. That's how most CISC processors work. RISC process rarely use anything like microcode and when they do, it is looked upon as very unRISCy.
Today, the internals of RISC and CISC processors are so complex that the almighty instruction set processing is barely a shim. There are still some advantages to RISC but they are dwarfed by out-of-order execution, vector extensions, branch prediction and other enormously complex features of modern processors.
Granted, you won't get as many shots as Windows 95. But, you know, Datastorm is registered trademark. Launching Procomm should keep the lawyers at bay.
I'm pretty I still have a unopened box for Procomm Plus for Windows 1.0 if you need it.
Not to mention leap years! 24/7/365 implies 1 day of downtime every 4 years.
Beats the 24/7/52 suggestion which implies 1 day of downtime every year. (52*7= 364 days)
Looks like a good method, if you ask me. I'm amazed that the OP thought that rejecting was a good idea while claiming that Google's method enabled dictionary attacks. Rejecting makes dictionary attacks much easier. No need to parse or even receive bounces. Validation is provided promptly in an easy to parse return code.
The article didn't discuss any absolute efficiency numbers. It only said the new tech was much more efficient than thermoelectric generators, whose efficiency is abysmal. There is no mention of having efficiency better or even comparable to a steam turbine.
Steam turbines are mechanically complicated and smell of old tech but they are actually rather efficient. Large steam turbines have thermodynamic efficiency in the 90% range. I rather doubt this new nuclear photocell is anywhere close.
One problem with a draconian cut-off like this is that people can be affected who are totally unaware of the problem.
Somewhat recently, I started using a perl version of rblcheck in some of my procmail recipes. A lengthy list of rbl's is embedded in the source code. I removed some obvious losers but was unaware until reading this article that ordb was a problem. How many people out there are using this script and are unaware that a bomb like this is lurking in the code? How many are using it and don't even remember that they even use this script?
2) an in-sink dishwasher, where I can simply pile my dirty dishes into the sink, slide the top closed, and let it do it's thing without me having to clean by hand or pre-scrub and load them into a separate unit.
Sounds like user error to me. If you have a dishwasher, there is no need to push dishes in the sink. Take them directly from the table on wherever they were into the dishwasher. If you have to pre-scrub them, that's a call for a better dishwasher, not an in-sink dishwasher. (Why would it be any easier, just because it happens in the sink?)
I am constantly irritated at my housemate for this. We have a dishwasher and when I need to use the sink, I always have to move his dishes from the sink to the dishwasher. It makes no sense. He saves almost no effort and, between the two of us, the work load is nearly doubled.
Now what would be useful is a self-emptying dishwasher. Some sort of robot to move all the dishes into the cabinets once the dishes are clean. Inevitably, the one time when you are really in a hurry, the dishwasher is full of clean dishes. My housemate puts his dishes in the sink even the dishwasher is empty.
Which countries are those? Even in Egypt, where they smoke heavily and everywhere, I never had problems in Internet cafes. Food cafes, sure but cyber cafes? No so much.
Thailand is not the world. I traveled Honduras over Christmas time. Internet in Honduras in 2007 was significantly more primitive than Internet in Thailand in 2003. Old, old, machines. Bad internet links.
Backing up images is a bit tricky when you have no laptop and the internet cafe's have no card readers. It's trivial if you have a properly equipped laptop. You don't keep the backup on your laptop. That would be stupid. You mail it home. My travelogs get emailed to multiple people. No chance that they get lost.
For me, personally, hand writing the travelog is a non-starter. My hand writing can not keep pace with my thoughts and it is doubtful I could read the result if I tried. Even typing is a challenge, but at least there is a fighting chance that results will reach the page and be decipherable.
I've already stated that if you not carrying much in the way of camera gear, then the jury is still out. But don't equate serious camera gear with "professional". Lots of people carry SLR's with multiple lenses because they like to take good pictures and point and shoots just don't cut it. If writing and photography do not mean much to you when you travel then, by all means, leave the computer at home.
What 99% of the people do is not important. What is important is choosing the right tools for what *you* do.
I've traveled with conventional (heavy) laptop and with none. There are significant downsides to both approaches.
Laptops are indeed heavy, bulky, fragile, and theft prone. But...
Internet cafes in the third world do not have the bandwidth to backup your images. They frequently lack the ports and they almost always lack the software. They are frequently not handy, not available, or not working when you want to write. *Everything* is subject to loss/theft. How do you propose to backup that paper notebook? When do you propose to transcribe months of chicken scratch into electronic form?
An EEEpc is about the right balance if you are already committed to carrying real camera gear. A weather sealed DSLR is nearly $1000. The lenses are more fragile then the EEEpc.
If all you are carrying is a simple point and shoot, then the jury is still out.
On the subject of preserving images, I am surprised that everyone seems to want to put all their eggs in one basket: bad idea. If traveling long term, backup your images periodically and mail the backup home. If the backup is lost in the mail, you still have the original in your pack. If you pack is stolen or the media is damaged, you still have the backups. It's getting to the point where the cost of flash to mail home is not a big deal. Still, if you find yourself some place where you can burn a DVD, go for it!
Being more selective doesn't mean the school is any better. It means that the students are better. Bragging about how selective you are is really just an appeal to popularity. "All these smart people must be coming here for a reason. Rather than do my own homework, I will assume that these people have done theres and that it must be a really good school". Crappy reasoning for an institution that is supposed to train people to think.
This could be a little disturbing, if it works. How long before the technology trickles down to the identity thief around the corner? We are now told to shred everything. What happens when shredding is not enough?
If you're far enough back from the light that coasting will make any difference, then they'd have to have their blinker on like 12 seconds before they got to the turn. No one will ever do that.
I'm not entirely sure whether you are being sarcastic or serious. In case you are serious...
I see people cars all the time, in stopped traffic, several cars back from the intersection with their turn signals on. That's a lot more than 12 seconds. I also see people wait until the last second to signal or not signal at all. Encouraging proper turn signal usage seems a good thing all by itself. I might do it even it didn't save gas.
If someone needs to get to the left turn pocket or intends to make a right turn on red, then their turn signal should be on. If it isn't, then any delay caused by me coasting to the light is their own fault.
take a notepad and a couple pens and just write out your adventure and just type it up later. Not reason to dwell on your prose, write done, what, when, where, why, etc. You can fill back in the details later.
No, actually, you can't. The mood is gone. The details are gone. The time and motivation to attempt to dredge up the remains of those memories will never appear. If you intend to write about your experiences in anything more than blur, you need to write about within days of when it happened. This takes time and is generally a pain in the butt. One can reasonably ask if all this writing and blogging is worth it.
Carrying a laptop is a pain the butt. It's a bit like carrying an expensive camera. It's worth it only if you are really going to use it. That means spending 1/4 or more of your trip writing about your trip. If aren't going to do that then don't bring a laptop. And never bring a brand new, prized machine. Never bring anything that you can't bear to lose.
A good intermediate step is a PDA with a folding keyboard. Much smaller, lighter, and cheaper than a laptop and you can still do a full writeup from wherever you are. Not so good for editing photos but for text it is fine.
Sony tried this years ago with their Vaio sub-notebook line of computers.
[snip]
It's only problem was that it just wasn't large enough to be practical. You can't really type notes on a keyboard of that size.
And yet, a folding keyboard, when attached to a Palm III, is quite usable for taking notes, writing travelogues, etc. It mostly suffers from the limitations of the Palm: very limited and volatile mass storage, no networking.
But the folding idea allows for a reasonable sized keyboard to fit in a small space. Whey haven't subnotebook vendors picked up the idea? The device only needs to be ultra small when carried.
Ben: You will go to the Dagobah system. There you will learn from Yoda, the Jedi Master who instructed me.
I think that was a rather big oversight on the part of Lucas, considering the Jedi Master who instructed Ben was Qui-Gonn, not Yoda. That one might be a little more difficult to explain away.
This is true, from a certain point of view.
Yoda almost certainly did instruct Obi-Wan when he was very young. We see one such a group session in _Attack of the Clones_. Luke needed to start from the basics so, in fact, Yoda's instructions may be more relevent then what Obi-Wan learned from Qui-Gonn.