[net.origins] Origins and Evolution

padraig@utastro.UUCP (Padraig Houlahan) (05/27/85)

>> [Jeff Sonntag]
>>     You're not wrong.  The theory of evolution applies to how speciation
>> occurs, not to how life arose origionally.  Whether life arose from
>> nonlife or was planted by aliens or was zapped into being by some
>> all-powerful godlike being is immaterial to the theory of evolution.
 
>How does one account for the origin of species without accounting for
>the origin of the first species?  That seems just a little too
>convenient. 

It would be nice if we knew enough about the formation of life to
include it with the theory of evolution, but we don't. It's kind
of like being in a desert and studying railroad tracks. We could
have a theory that the rails are almost always nearly parallel; are
mounted on ties with a certain average separation; made of .... etc.
That we might not know from which place they originated in no way
invalidates our theory. The theory is valid only over the domain
of applicability.

>.... But your statement is false in any case.  The notion that
>chemical evolution is integral to the theory of evolution is widespread.
>(Miller and Fox come to mind.)  The BSCS (high school biology
>curriculum) "Blue edition", for example, is titled "Molecules to Man".
>I just saw this in a library the other day, so I looked in it out of
>curiosity.  The chapter preceding the one on (what Jeff calls)
>evolution was about - you guessed it - abiogenesis.  Evidently there
>was no such false dichotomy between the beginning of life and
>speciation of existing life in the minds of the editors.

I don't understand this. Where's the problem if they are in separate
chapters? The book is on biology, not evolution, therefore it is not
out of place to include a section on the biologist's view of origins.

>Abiogenesis easier to "snipe away at"?  Now I understand why you say
>it's not part of the theory of evolution...
>-- 
>                                                                    |
>Paul DuBois     {allegra,ihnp4,seismo}!uwvax!uwmacc!dubois        --+--

The connection between the earth's magnetic field,the weather, and sunspots,
with the theory of evolution is also not clearly defined and not included
in evolution. I hope your understanding increased accordingly when you
realized this.

Padraig Houlahan.