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- Path: sparky!uunet!pipex!ibmpcug!mantis!mathew
- From: mathew <mathew@mantis.co.uk>
- Newsgroups: comp.human-factors
- Subject: Re: Seperation of Church and Elevators
- Message-ID: <cwcJuB13w165w@mantis.co.uk>
- Date: Fri, 20 Nov 92 11:39:23 GMT
- References: <1992Nov19.163325.662@cine88.cineca.it>
- Distribution: world
- Organization: Mantis Consultants, Cambridge. UK.
- Lines: 67
-
- bassi@cs.unibo.it (Bruno Bassi) writes:
- > In article <1992Nov14.213444.25253@magnus.acs.ohio-state.edu> sruland@magnus.
- > >however you rarely see them used, but on realy old Otis
- > >elevators 1940's (?) And the reasoning was that going up
- > >was a good thing (i.e. Heaven) and going down was a bad
- > >thing (i.e. red=hell). The buttons usually carried the
- > >redundant colored lights in addition to the up and down
- > >arrows.
- >
- > The main issue about this whole thing seems to me the following:
- > No matter how arbitrary the coding between an interface representation
- > or action and the thing it represents or the action it stands for,
- > you can *always* with some effort find some sort of "explanation" or
- > mnemonic trick for it.
- > But: besides the one you find, there may be other interpretations that
- > come quite naturally to other people's minds, and that are misleading.
-
- Quite. In the UK, traffic lights have red at the top and green at the
- bottom. I would expect people here to associate red with "top" and green
- with "bottom" for that reason.
-
- > I want to submit an example, from interfaces as supposedly "good" as
- > Mac and Windows. Take a case in which I have to enter a number as a
- > parameter, e.g. to set icons spacing in Windows Control Panel. I get a
- > small box with the default value, and on one side of it there are two
- > arrows pointing up and down. Now the idea is "push the up arrow to increment
- > the number (to get a higher one), and the down arrow to decrement it.
- > Folks, I ALWAYS GET IT WRONG. I do exactly the opposite, and I just
- > can't learn it the right way, and no use in RTFM.
-
- Actually, funny you should mention that. I noticed myself doing just the
- same thing yesterday. I had no idea why I would click on the "down arrow"
- button to increment something, but I did it without thinking. So you are not
- alone!
-
- > I understand that, presented with an up-down axis (suggested by the
- > arrows), I tend to imagine natural numbers disposed in a vertical row,
- > like this:
- >
- > 0
- > 1
- > 2
- > 3
- > .
- > .
- >
- > Try to see it this way, and you will understand how an "up" arrow could
- > naturally yeald a smaller number, and conversely for the "down" one.
-
- Hmm. Yeah, that makes some sort of sense. But I think in this case, our
- brains are at fault; we're thinking too mathematically. Probably we're used
- to seeing program line numbers or something...
-
- > For this particular case, I think that a horizontal representation, with
- > "left" and "right" arrows, would do much better. I find it natural to think a
- > the "right" direction as the direction where things increase (probably
- > because texts grow rightwards). And, if you spatialise numbers, you get
- >
- > 0 1 2 3 4 . . .
- >
- > which also works.
-
- Sounds like an excellent idea.
-
-
- mathew
-
-