Emile comments on Welcome to Less Wrong! (2012) - Less Wrong
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Comments (1430)
A good argument, but there's (at least) two little things I object to and a major flaw:
This only holds in a society where people aren't sufficiently intelligent for "is obviously not a person" not to work as the criterion. We probably live in such a society, but I hope we don't forever.
This was the reason age was chosen, rather than neurological development. Because I'm arguing only that parents should be able to kill their own children, I'm pretty sure this law wouldn't give rise to any confusion.
Your whole argument is significantly weakened by the fact that there are other extremely important rules which don't have obvious Schelling points, like "don't have sex with people who can't give informed consent". I don't think that drawing some reasonable line in the sand (say, age 17) has, as you say, undermined the strength of the universal agreement that "we shouldn't have sex with people who can't give informed consent", despite the line separating people able to give informed consent and people not able to give informed consent being absolutely obscure and arbitrarily drawn.
But there is no universal agreement on the "age of informed consent", it varies from country to country! And yes, the fact that the limit is arbitrary does undermine its strength; there are often scenarios of "reasonable" sex (in that most people don't consider it as wrong) that would be consider statutory rape or whatnot if the law was taken at the letter.
(Also, heck, 10 months is a pretty crappy limit, why not 8 months five days and 42 minutes? 12 months would be much cleaner)
But isn't birth - or first menstruation, or what have you - a much cleaner line? Shouldn't we be going by those, instead? No? Of course we shouldn't; sometimes the obvious choices for where to draw a line are so off from what would be reasonable that we're forced to be arbitrary.
Isn't 20 years a much cleaner line than 17, for age of consent and drinking age? Why not go with those? You have to pick something.