> "if a tree falls in the forest and there is no one around,
> does it still make a sound?"

This question provides a great opening to get students to think about
the nature of perception. The answer depends on whether you identify sound
as the physical vibrations or the psychological experience. A slightly
more provoking question may be: Does a dog whistle make a sound? Some
would say it clearly does, but others would argue that humans can't hear
it, so it doesn't. There may not be a correct answer, but it makes for a
fun discussion.

Enjoying playing in the muddy water,

Jeff

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| Jeffrey J. Sable                                           492 Bluemont | |
| Behavioral Neuroscience/Physiological Psychology    1100 Mid-Campus Dr. | |
| Department of Psychology                            Manhattan KS  66506 | |
| Kansas State University                            (785)532-6850 (msg.) | |
| http://www-personal.ksu.edu/~jsable                 (785)532-5401 (fax) |/
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