Re: [Phys-l] Intelligent designists fight back

["Laurent Hodges" <lhodges@iastate.edu>]

> I seem to have it that the direction in which organisms evolve
> is (always?) to greater complexity with time.

Usually, but not always.  When environmental conditions change, an organism 
might develop more complex structures, but then, when conditions change again 
or even change back, it might be possible, and energetically favorable, to undo 
the change or evolve a simpler structure.  Parasites, for example, are often 
simpler than some of their ancestors.  Also birds that can fly have sometimes 
lost the ability to fly.

Laurent Hodges