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- From: jharuni@micrognosis.co.uk (Jonathan Haruni)
- Newsgroups: comp.human-factors
- Subject: Re: Interesting Elevator HF error:
- Message-ID: <BxtCxI.HJz@micrognosis.co.uk>
- Date: 16 Nov 92 14:44:05 GMT
- References: <1992Nov12.185243.8925@chesapeake.ads.com> <3672@isgtec.isgtec.com>
- Sender: news@micrognosis.co.uk
- Organization: Micrognosis International, London
- Lines: 42
-
- We had new elevators installed in our building about a year ago, and there
- are a couple of interesting HF errors with them. (This has nothing to do
- with the red/green light story):
-
- 1) There were three elevators. Two of them had the buttons on the right side,
- and the third had them on the left. Buttons were in two vertical rows, and
- for some reason, the odd elevator had its two rows reversed. I suppose
- someone decided that certain buttons should be on the "in" side and others
- on the "out" side. Anyway, people were generally used to having the "hold
- doors open" button on the LEFT so whenever someone in the odd elevator
- tried to be polite and hold the doors open for someone, they often ended
- up shutting the doors on their nose, then saying, "Oh, sorry, sorry, sorry,"
- and reaching for the buttons a second time and _doing it again_ !!! Clearly
- left/right is a more intuitive thing to remember than towards/away from the
- inside of the elevator.
-
- (A similar argument has been made for British versions of European cars,
- which have the turn-signal handle on the left and the wipers handle on
- the right, just like the European versions, even though that means you
- have to signal and change gears with the same hand ! I think the true
- argument for this arrangement is that they only have to manufacture one
- kind of steering column.)
-
- 2) These elevators have little two-digit LED displays in them to show you what
- floor you're on (instead of 32 separate lights.) But the elevators
- were very fast ones, and the displays, while in motion, showed which floor
- the elevator was next capable of stopping on, which at full speed, was three
- floors way. I found there were three attitudes to this, and my overall
- impression was very negative.
- i) Technically-minded people, including myself, thought 'Hey, neat.'
- Once I figured it out, I could actually see the elevator's acceleration curve.
- As the elevator passed the first three floors, the display went through six
- in a non-linear way. Most people, however, did not find such things quite
- as fascinating.
- ii) Most employees of the building got used to it, but never figured it
- out, so simply passed off the display as being wrong and ignored it.
- iii) Visitors to the building, especially on the way back down, always
- looked terrified when the display went "..5..4..3..2.." and the elevator
- was still going full speed, and then teeth were clenched as the display went
- "..1..Ground" and the elevator was STILL going full speed. The display
- continued to show "ground" while the elevator decelerated through three
- floors, and you could see some people checking their pants as they got off.
-