russ_watters
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TSE, I think I see the problem here: I'm creating a bridge between two completely separate uses of the word "better".
First, "better" from an evolutionary standpoint is a completely objective description of what has caused an organism to evolve in a certain direction. Sperm evolve tails, multiplying the number of offspring? That's "better" from a strictly objective biolgical point of view.
Second is "better" from an ethical point of view. This is more difficult, but I agree that to individuals, ethics is largely subjective. But if we bridge the two concepts, we can come up with an objective basis for ethics. Take a consensus of what people subjectively consider "better" and via logic find the ethical system that makes us evolve in that direction.
But wait, what if the consensus is a consensus ethical behavior that drives us to extinction...? Can it really be biologically "better"...?