On Fri, 27 Feb 2004 16:41:01 +0000 (UTC), tomhendricks474{at}cs.com
(TomHendricks474) wrote:


>We are talking about a billion years apart in time.
>I'm asking how could any of this start in either an environment that
>continually got hotter endlessly.
>Or the other extreme - got colder endlessly.
>Every aspect of life is in the very very very narrow temp zf liquid water.
>What life exists at absolute zero, or in the middle of a burning star?
>So lets
>Z**
>noncovalent bonds) would respond to the cyclical heat cycle then.
>any other scenario might be interesting, but it won't have anything to do with
>the OOL. Would it?
>
>Best wishes,
>Tom
>
>RSN
> In addition, you don't need a "heat cycle" to produce
>environmental change. Spatial variation will do. 
>TH
>Explain please.
>
I don't really follow your arguments about heat cycling, to be quite
honest.

You seem to think that the alternatives are constant change towards
increased temperature or constant change towards decreased
temperature.  Since we know the temperature on the surface of the
earth has remained reasonably "constant" (water usually remains
liquid), then there is a "heat cycle".  Also, somehow that heat cycle
was necessary for the origin of life.  I agree that a "constant
temperature" really means a fluctuating temperature, not absolute
cnstancy, and that may consistute a "cycle" but I don't see how that
relates to the origin of life.

Further, you insist that environmental variablility be necessary to
poduce variation in organisms.  I suggested spatial variability (the
temperature here is not the same as the temperature there) is just as
variable as temporal variability (the temperature now is not the same
as the temperature earlier).
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