It seems to me that among evolutionary theory's least-exploited weaknesses are its implicit assumptions about the conditions necessary for life to come into existence.
Evolutionary principle, in other words, only comes into play when organic life first forms. But shouldn't adaptive forces be at work even before full-fledged life appears? Shouldn't, for instance, the principles of evolution be equally adept at creating non-carbon-based life forms as carbon-based? Shouldn't evolution be as capable of creating rock-based life as water-based?
It seems silly to claim that evolution can take atoms from the primordial soup to mankind (and beyond) ONLY IF the exact building blocks of carbon-based life are present first. Shouldn't the adaptive powers of evolution be just as capable of raising some form of life from a helium primordial soup as from carbon?
Where does evolution begin? After life's initiation, or before? It seems completely contrary to evolutionary theory's claims to suggest that life requires certain inescapable conditions to form. Isn't the point of evolution that life adapts to exist and survive? Evolutionary forces, if real, should be as active in forming life as in advancing it. Which means that adaptation should include adaptation to non-carbon environments.
Ironically, some at the forefront of evolutionary thought (Kurzweil, etc.) propose an evolutionary jump from man to machine--from carbon-based to non-carbon-based life--as the next major evolutionary leap. But if non-carbon-based life is possible at the more advanced end of the evolutionary spectrum, why not at the outset? If evolution potentially ends at machines, why couldn't it start there as well?
The assumption by evolutionists that carbon is essential for life implicitly establishes evolutionary theory on a foundation of design. Though evolutionists suggest the existence of non-carbon-based life forms elsewhere in the universe, the absence of the slightest evidence for such life forms is damning evidence of evolutionary theory's need for a stacked deck at the outset. Evolution needs a perfectly designed universe even to get out the gate.
Read more on the many ways the universe conspires to support life on earth (what some call the anthropic principle) in this article from the Wall Stree Journal.