Neat Richard Dawkins essay on the God Delusion
"Natural selection is an anti-chance process, which gradually builds up complexity, step by tiny step. The end product of this ratcheting process is an eye, or a heart, or a brain - a device whose improbable complexity is utterly baffling until you spot the gentle ramp that leads up to it." -- via the Huffington Post
And a nice bit on the anthropic principle and the fortuitous alignment of various cosmological constants:
"You can estimate the very low odds against the six knobs all just happening to be correctly tuned, and conclude that a divine knob-twiddler must have been at work. But, as we have already seen, that explanation is vacuous because it begs the biggest question of all. The divine knob twiddler would himself have to have been at least as improbable as the settings of his knobs."
"The anthropic principle entitles us to postulate a massive dose of luck in accounting for the existence of life on our planet. But there are limits. We are allowed one stroke of luck for the origin of evolution, and perhaps for a couple of other unique events like the origin of the eukaryotic cell and the origin of consciousness. But that's the end of our entitlement to large-scale luck."
And -- wait for it -- the FSM makes Its Awsome, Noodly Appearance:
"We cannot, of course, disprove God, just as we can't disprove Thor, fairies, leprechauns and the Flying Spaghetti Monster. But, like those other fantasies that we can't disprove, we can say that God is very very improbable."
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