Re: Human Imperfection

[T3D john bercovitz <bercov@xxxxxxxxxxx>]

Shab Levy writes:
 
> What are the other choices John? Isn't the human body designed 
> to function optimally?
 
I don't even know that it was designed.  One may assume it jest 
growed.  8-)  But seriously, appellations such as "Hawkeye" and 
"Eagle Eye" are based on fact.  These animals' eyes have much 
finer resolution than ours.  They must if they are going to see 
dinner (rodents) from so very high up.  
 
I can't imagine any optical advantage in wearing one's retina 
backwards, but optical advantages aren't the only possible 
evolutionary advantages.  I think all the vertebrates are built 
like this.  I could imagine that if a blood vessel in the retina 
breaks, and the vessel is on the surface as in out eyes, then a 
little blood dumps into the humor and if it's not too bad it 
clears eventually.  Built the other way, you'd might get an 
aneurysm that might wreck the retina.  This is pure speculation on 
my part but it's an example of the kind of speculations one might 
be able to make.  Squid are built more sensibly and then there are 
the compound eyes with one nerve per lens, and these are supposed 
to have an advantage in rapid sensing of motion.
 
John B


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