Re: Johnson and "Icons"

From: george murphy (gmurphy@raex.com)
Date: Mon May 14 2001 - 07:20:10 EDT

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    "Hofmann, Jim" wrote:
            ................................................

    > Miller, as well as other authors, do use simplified drawings of actual
    > photos of emryos. They do so in order to emphasize the similarities they
    > want students to be aware of. I see this as analogous to using an "idealized
    > frictionless inclined plane" in a physics text to approximate motion down an
    > actual inclined plane. "Fraud" is not applicable in either case.

            Frictionless inclined planes, massless ropes &c are legitimate
    theoretical concepts & can be pedagogically useful. But they need to be
    complemented by experimental work which makes the student (& theorist!) aware
    that real planes aren't frictionless, real ropes have mass &c. I would think
    that a similar balance between theory & observation would be needed in teaching
    evolution.
            (If you ask a theoretical physicist to design a table for you, she/he
    will happily design one with one leg or an infinite number of legs. But if you
    want one with four legs, you may be out of luck!)

    Shalom,

    George

    George L. Murphy
    http://web.raex.com/~gmurphy/
    "The Science-Theology Dialogue"



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