Gotta disagree with the darwin thing!
It's not survival of the fittest anymore, it should be Survival of the most adaptive. with the world constantly changing, if a species doesn't adapt it, doesnt matter how fit they are, sooner or later something will adapt and eat it! :-) just my thoughts on the matter.
Survival of the fittest really means "more adaptive will survive". Don't confuse the term with being "physically fit".
From Wikipedia for the lazy: Darwin meant it as a metaphor for "better designed for an immediate, local environment", not the common inference of "in the best physical shape".
oooh also completely forgot to point out - that the term actually belongs to Spencer not Darwin ^.^ Cant believe i forgot that! Bill Bailey did a great documentary about Spencer and he made a point that the term belonged to Spencer, from what Bill Bailey was saying, Darwin simply had the money and the notoriety to be able to get the message to the right people, where as Spencer was a penniless Englishman trying to make a living by selling the exotic species he was finding, if he had the money to backup his claims, we would probably be discussing Spencer in place of Darwin ;-) Now who was it that said Marketing was everything.....