That's interesting: Vladimir_Nesov chastised me for exactly the same thing a month ago. While I probably do reify physical laws, I'm sure he was just applying a metaphor.
My point in both cases is more that the concept of "existence" is very low on meaningfulness, that you shouldn't act on mere "existence" of "nonexistence" of something, you must instead understand what that something is.
I declare this Open Thread open for discussion of Less Wrong topics that have not appeared in recent posts.