I could never stand the the things [IBM
Wheelwriters]--press a key
and there's a variable delay between when you hit the key and when
the print hammer goes "chunk".
Interesting. I don't think that would bother me; my typing is so
heavily pipelined already that that feedback is not important. My own
estimate is that, depending on various factors, the pipeline between my
mind and my fingertips can be as large as a half-dozen keystrokes; add
in the delay between my eyes seeing something (or my ears hearing it,
or my fingers feeling it, or whatever) and whatever mental process is
generating the keystrokes reacting, and it's more like 20 keystrokes
between making a mistake and the pipe being fully flushed so that
fixing it is possible. (Rather annoying when it comes to fixing
mistakes.) Instant feedback is not only not necessary, it's not even
really possible, because of that pipeline between mind and fingertips.
Indeed, I've been known to type significant amounts almost completely
open-loop. This paragraph, for example, I got two lines into before
the display got past "Indee". (This is mostly because of quadratic
behaviour in some screen updating code; someday I may have another
crack at improving it.)
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