On Sunday, September 2, 2012 3:28:26 PM UTC-4, Brent wrote:
> On 9/2/2012 9:09 AM, John Clark wrote: 
> > 6) Evolution has no foresight: This is the most important reason of all. 
> >     A jet engine works better than a prop engine in an airplane. I give 
> you a 
> >     prop engine and tell you to turn it into a jet, but you must do it 
> while 
> >     the engine is running, you must do it in one million small steps, 
> and you 
> >     must do it so every one of those small steps immediately improves 
> > the operation 
> >     of the engine. Eventually you would get an improved engine of some 
> > sort, but it 
> >     wouldn't look anything like a jet. 
> Good exposition.  But it's not the case every small step must be an 
> improvement.  It's 
> sufficient that it not be a degradation. 
It seems like both of you are attributing to evolution some kind of 
universal fitness. The terms improvement and degradation superimpose a 
pseudo-teleology on evolution. In reality, if your island is suddenly 
underwater, whoever happens to have the leftover semi-gills stands a better 
chance of surviving and reproducing than the otherwise superior other 
species. It has nothing to do with improvement, it's just an accumulation 
of environmental shakeouts. Survival of the lucky. 


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