RAZD, I appreciate your scientific posts. I'm not a fan of Dawkins though. Interesting, you quoted him as describing evolution in this way,

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Dawkins likened it to a drunkards walk, staggering along a path, and no clear goal.

I think this is probably what some evolution-deniers object to. I'm not sure that there's clear-cut objective evidence for this, just like I'm pretty certain there's no clear-cut objective evidence for his metaphorical "selfish genes." The implication here is that evolution into whatever form is something that "happens" to organisms, a one-way process, completely random. I wonder if it's possible that organisms themselves have an influence -- on the environment, on how they adapt. I'll be able to say more about this once I finish reading Rupert Sheldrake's "The Presence of the Past." Sheldrake and Dawkins don't get on together too well.