[DrNick]

Is the expression of the difference between existence and nothingness.

In order for something to perpetuate itself through time it must battle entropy with a confined dynamic system capable of growth and reproduction.

Once something can replicate itself imperfectly then there is the pressure of selection. The imperfect replication leads onto points about diversity verus total population as a strength.

Anyways chances are a mutation is deleterious and will cause harm to the offspring and so evolution is driven by death, not survival. The fittest don't survive, the weakest die. Death drives selection, aslong as something lives it reproduces. Therefore death is the only factor involved, not fitness.

This leads onto the point that all you see is organisms that survived. The total possible life that could have existested is snubbed out by deathj an you don't see it. Life is not amazing, it is simply what has been successful in propagating itself. No generation is the same as the last. Species don't evolve and become extinct with nothing happening inbetween. Life is dynamic as it is a system of reactions that we recognise as life.