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    Re: Definition Drift, WAS: Bowditch 1995 Table 18
    From: Bill B
    Date: 2005 Feb 5, 03:50 -0500

    Do these British studies/research cross cultural boundaries, including
    cultures that may read bottom to top, left to right, or some combination
    > Peter-
    > I agree with you about digital information not always being the best. Among
    > the tidbits...I'm sure you've seen and used guages on various cars or other
    > instrument panels. Supposedly some British powerplant study in the 60's
    > determined that the most effective way to set up banks of power gauges was
    > in vertical format, i.e.
    > 9
    > 8
    > 7
    > 6
    > 5 (needle)
    > 4
    > 3
    > 2
    > 1
    > with the needle floating up and down across the guage, like an elevator cab.
    > The reason for this? The human eye/mind are set up to perceive DIFFERENCES
    > and changes. So when you've got fifty gauges set up side by side, and they
    > all should be on "5", the eye immediately picks up on anything that is
    > literally out-of-line. Numbers are nice but they aren't the best way to
    > present the picture all the time, especially when they are flashing and
    > changing and presenting too much information. Rate of change is still
    > easier to read from an analog gauge, even if an additional digital
    > rate-of-change meter would be more accurate.
    > Racing cars do something similar, they will rotate the round gauges so that
    > all needles point to 12 or 1 o'clock when they are in the normal
    > range--regardless of what number that is. Same purpose, you can scan them
    > all with peripheral vision and the "odd man out" pops up quickly.
    > After our Indian Point powerplant debacle, caused by some operator grabbing
    > the wrong "they all look alike, isn't that nice?" handle, the nuke plants
    > here LITERALLY used handles from bar taps! It's hard to mistake two
    > different color/shape/size handles for each other.

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