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While this is in some sense true, it doesn't add up to normality; it is an excuse for avoiding the actual moral issues. Humans are chemical processes; humans are morally significant; therefore at least some chemical processes have moral significance even if we don't, currently, understand how it arises, and you cannot dismiss a moral question by saying "Chemistry!" any more than you can do so by saying "God says so!"
Moral significance is not a fact about morally significant humans. It's a fact about the other humans who view them as morally significant.
Our brains' moral reasoning doesn't know about, or depend on, the chemical implementations of morally significant humans' bodies. Therefore there are no moral questions about chemistry, including human biochemistry.
The original quote is correct: DNA should not be held sacred; DNA-related therapy is a tool l... (read more)