Re: origin of granites

From: Darryl Maddox (dpmaddox@arn.net)
Date: Thu Dec 14 2000 - 09:31:55 EST

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    Just a short note to point out an important aspect of Jonahathan's
    statement:

    ----- Original Message -----
    From: "Jonathan Clarke" <jdac@alphalink.com.au>
    Cc: <asa@calvin.edu>
    Sent: Wednesday, December 13, 2000 2:43 PM
    Subject: Re: origin of granites

    > Hi Joel

    Snip...
    > Although a bit dramatized, the article is not a bad summary of some of the
    innovations in understanding the genesis of granite that has occurred over
    the last 20 years.

    Snip....

    >Selective quotation of this article might be used to give some veneer of
    academic credibility to a claim like "Of > course granites can form quickly,
    even the godless geologists admit it!".

    The significance of Jonathan's statement is that it illustrates the problem
    of argueing a position without first agreeing on a common vocabulary and by
    using relative or qualitative rather than quantitative terms. We in America
    just went through 36 days of legal hageling and no one (at least that I
    saw) bothered to point out the difference between the terms "ballot" and
    "vote". In fact one speaker on TV lost his argument on this very point and
    either never realized it or realized it and chose to lose the argument
    rather than point out the distinction. He said there were X "votes" that
    had not yet been counted. His opponent countered with: all the "votes" have
    been counted. They went back and forth a couple of times and then the
    opponent said (this is what my wife told me so it may not be verbatem but it
    is probably closer than if I had heard the exchange myself - she is better
    at details than I am) "If the votes haven't been counted how do you know how
    many there are?" and the first guy folded. Apparently he had repeated the
    statement so many times he didn't realize that it was the ballots that were
    counted, not the votes. The number of "votes" i.e., indications of the
    voters preferenece, on the ballots to which he referred had not been
    determined because the machine was unable to make this determination and no
    one had yet looked at these ballots. He could have made this argument as a
    come back and perhaps continued the argument and perhaps even carried on to
    win it or perhaps been forced to admit he had no objective way of
    determining a "vote" vs some other randomly or even intentionally created
    mark (but one not intended by the voter to be a vote) on the ballot. But he
    didn't. And of course no one on the Republican side ever bothered to point
    out that it was the "ballots" that had been counted and not the "votes" they
    may or may not have contained. I think the leaders of both parties
    maintained this bit of confusion for their own purposes and only a few
    people realized the two sides were not talking about the same thing.

    I bring this bit of politics into this discussion because I have found the
    practice of argueing by changing the meaning of a key term to be common in
    the young earth/old earth debates. Two examples are particularly prevalent
    I believe:

    1) The implication (or outright statement) that thick deposits composed of
    composed of silt and clay containing planer laminations can not be used to
    indicate slow deposition because "horizontal bedding" is also found in
    deposits of coarse sand. The confusion here is caused by the implication
    (or outright statement) that high flow regime and low flow regime structures
    can be formed in hydrodynamically similar situations.

    2) Statements to the effect that radiometric dating techniques are
    unreliable because either the decay constants have been shown to be affected
    by their phyical environment or that we have changed the value for these
    numbers which we use to calculate the age of a particular specimen. If I
    understand the situtation correctly:
    A) the only decay contants which have been shown to be affected by their
    physical environment are those for some isotopes and modes of decay which we
    never use in radiometric dating and consequently the argument is invalide on
    two counts, wrong isotopes and wrong method of decay;
    B) the changes in the value we use for the decay constants were made as the
    result of continueing measurements of these isotope decays and the
    difference in the calculated age of a rock or mineral grain which result
    from using the two extremes for the value are insignificant for the purposes
    of a young earth (<50,000 years) vs. old earth( X.billion years)
    determinations; thus this argument is also invalide.

    If others have good examples of such misuse of terms I would enjoy seeing
    them.

    Darryl



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