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>> All right, welcome to CS 50. This is week 4. So it's always kind of fun when you pick up the paper in the morning and there's actually something apropos to class that day. And this is an article in the front page of today's Wall Street Journal. And those of you who have a computer know that your computer has a keyboard, but it's called a QWERTY keyboard for some reason. Why is it called the QWERTY keyboard? Okay, can't actually make out any of those comments, but presumably because it spells QWERTY, Q-W-E-R-T-Y. Here's a random keyboard from the Internet, Q-W-E-R-T-Y, never heard this expression you have a QWERTY keyboard just because that's the most phonetically pronounceable string of characters someone discovered many years ago. But there's this alternative called Dvorak, which some people, perhaps those among those more comfortable, sometimes use. Personally, I never got the hang of this. But this article here in the Wall Street Journal is about this. Quick little excerpt which amused me. The Dvorak keyboard layout, though around for decades, is as little known among the general typing population as it is passionately embraced by its devotees. It is to the keyboard what Esperanto is to language and what Betamax is to video tape. Fans say it let's them type at blazing fast speeds, with less strain on their hands and wrists than typing on a conventional keyboard. And this was, I thought, the punch line, nobody else cares. And if you actually then follow up, let's see, turn to Page A-4, there's more discussion on this. And the context was there's a bunch of people sort of bemoaning the fact that smart phones these days, iPhones and what not, apparently don't support Dvorak, they've kind of optimized for the rest of the world. The Wall Street Journal really went to town on people here. Smart phones seem dumb to Dvorak fans, but let's see — this was kind of cute. So the final quote in this article is I think it's really sad, says one Dvorak devotee, that Dvorak isn't on smart phones, but it's something I'll have to live with. I'm a Dvorak typist in a QWERTY world. So those of you — some more geek humor, those of you who have travelled internationally or are from abroad known that there are certainly differences in certain countries. Most recently I was in France and sat down in the hotel's kiosk and got so frustrated, because I couldn't find, like, the forward slash symbol, because it was in just a different place. But there's yet other keyboards out there. I just did actually a quick Google image search and found this one, which actually some of my more advanced friends have. It's this crazy looking thing, which frankly I can not even send an e-mail effectively on. But it looks a little like this. And frankly, the motivation — laughing at me, huh? There — oh! So frankly, I mean, I don't mean to poke fun at these things, because even I have had issues with RSI, repetitive strain issues, that actually can be alleviated to some extent by devices like this. But again, I just never wrapped my own mind around this. But the neatest keyboard I think I ever saw was owned by a really geeky MIT friend of mine in graduate school, whereby in his lab, I sat down, went to just send an e-mail or something, looked down at this keyboard, looked like a very standard, black Dell keyboard, keys not like this, but a normal keyboard, but none of them were labelled. So there was no Q W E R T, no ABC, there was no labels on this keyboard.