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Guess which switch controls the projector screen?
This
picture shows a projector screen in a conference room.
The white screen is lowered from the ceiling
in front of a blackboard. To the right of the
screen are some electrical switches.
Guess which switch raises and lowers the screen?
The switch next to the screen? No, it's the
switch farthest away from the screen!
Design suggestion
Place a control next to the device it controls.
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Copyright © Michael J. Darnell 1996-2010. All rights reserved.
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