taryneast comments on Reductionism - Less Wrong
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AFAICS, he is not "forbidding" a plane's wing from existing at the level of quark. He's just saying that "plane's wing" is a label that we are giving to "that bunch of quarks arranged just so over there". This as opposed to "that other bunch of quarks arranged just so over there" that we call "a human".
That the arrangement of a set of quarks does not have a fundamental "label" at the most basic level. The classification of the first bunch o' quarks (as separate from the second) is something that we do on a "higher level" than the quarks themselves.