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Re: Ergonomics and neurology for interface designers
From: |
David Kastrup |
Subject: |
Re: Ergonomics and neurology for interface designers |
Date: |
Tue, 25 Nov 2014 15:15:38 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (gnu/linux) |
"Eric S. Raymond" <address@hidden> writes:
> What humans cannot do is take sensory input, process, and then *react*
> faster than spinal-reflex-arc time! Raskin's basic discovery was that
> if you throw a mockup of your application start controls on the
> display, you have a minimum of 0.17 seconds to finish initializing the
> real controls before a human is capable of noticing and then trying to
> do something.
Well, but working with an editor in many ways is similar to typing on a
typewriter: you don't usually wait for an action initiated by a keypress
to complete before typing the next.
There are various timers in Emacs, like the one showing incomplete
command sequences or the one popping up mouse-over help, which
consciously act with a delay in the expectation that a human will
generally _not_ wait for a response by the computer before performing
his next action.
We actually had just recently a font-lock problem when scrolling with
autorepeat rates of about 30 characters per second. You won't stop on
the dime with such rates, but one still has a chance to catch what one
is looking for. Things like multi-file incremental search may even run
governed by the autorepeat rate.
So I don't see that we have an absolute time threshold below which
version control caused delays are irrelevant.
--
David Kastrup
- Re: Testing the new VC code, (continued)
- Re: Testing the new VC code, Michael Albinus, 2014/11/24
- Re: Testing the new VC code, Eric S. Raymond, 2014/11/24
- Re: Testing the new VC code, Michael Albinus, 2014/11/25
- Re: Testing the new VC code, Eric S. Raymond, 2014/11/25
- Re: Testing the new VC code, Michael Albinus, 2014/11/25
- Re: Testing the new VC code, Eric S. Raymond, 2014/11/25
- Re: Testing the new VC code, Stefan Monnier, 2014/11/25
- Re: Testing the new VC code, Eric S. Raymond, 2014/11/25
- Re: Testing the new VC code, David Kastrup, 2014/11/25
- Ergonomics and neurology for interface designers, Eric S. Raymond, 2014/11/25
- Re: Ergonomics and neurology for interface designers,
David Kastrup <=
- Re: Ergonomics and neurology for interface designers, Eric S. Raymond, 2014/11/25
- Re: Testing the new VC code, Stephen J. Turnbull, 2014/11/25
- Re: vc-state-heuristic is gone, Stefan Monnier, 2014/11/24
Re: vc-state-heuristic is gone, Richard Stallman, 2014/11/24
Re: vc-state-heuristic is gone, Richard Stallman, 2014/11/24