One other interesting aspect would be to look at the effect of different keyboard layouts. For instance, ZXCV are all nicely placed for QWERTY, but with Dvorak, they are really scattered. (Z is on the / key, which is nice because it’s just the mirror image. X is on the B key, which isn’t too bad. C is on the I key, which can be a bit awkward to hit for a while. V is on the . key, which is usually fine, but in some programs is very annoying: right next to it is W (on the , key), which means it’s easy to hit ctrl-W (close window/tab) when you want to hit ctrl-V.) Other programs are designed for ease of use with QWERTY and are worse with Dvorak.
I love the Dvorak layout and don’t regret it in the least, but it can sometimes be annoying. Some systems have a layout that normally works like Dvorak but switches to QWERTY when ctrl/apple is held down, but this seems like it’d just be confusing.
@Josh: “I am curious if anyone has experienced greater productivity using mouse gestures. I haven’t delved into too much myself, but squiggling an S with the mouse could be just as fast as Control+S.”
Depends on how good the gesture system is. Doing something as intricate as an ‘S’ would, I think, be quite difficult unless the system allowed a lot of error. (Disclaimer: I’m left-handed most of the time, but mouse with my right hand. I’m less precise than some people are.) I used gestures in Firefox for a while. I found forward and backward indispensable (click, drag left/right, release); at times, I would switch into IE and try to do the same and have it not work. It’s like the mouse wheel, when you would sit down at a computer that didn’t have one and instinctively try to scroll with it anyway, but rather less strong. I would also often use the new tab gesture (click, drag up, release), but also often not; I usually would move my hands to the keyboard to enter the URL anyway, so would usually just do ctrl-T. I would sometimes use the close-tab gesture (click, drag right, left, right, release), but I found that even something that complex I sometimes got wrong, and it was usually just faster to hit ctrl-F4, at least if my hand was on the keyboard.
@Nicolas: “I have done the experiment a few times this week. Unplugging my mouse for an hour or more, and trying to survive.”
My mouse does that for me every so often when I don’t pay enough attention to the batter indicator. Usually it happens at inopportune times.