Are Meteors Selective?
Thu, 24 May 2001 14:44:25 EDT

In a message dated 5/24/01 1:28:23 PM Eastern Daylight Time, 

<< It's not to say that evolution doesn't work or doesn't select for --
 something -- but we don't have a good definition of what's going on.
 Evolution selects traits which promote survival.  Does anybody have a better
 definition of fitness or is the concept just not needed?
 lisa >>

with abortion, i'd think you'd have to throw in chance, which is not commonly 
considered a trait.