Invariances Book

An interesting read. The important contribution of the work is an account of objectivity in terms of invariances under certain transformations and a coherent defense of relativism. The book covers several important areas of philosophy, but unfortunately, Nozick is biting off far more than he can chew. He leans heavily on popsci versions of (alas, very dated) string theory, quantum mechanics, and game theory to prop up his positions. Sometimes this works, but I don't think it does in his discussion on the problem of consciousness. The work on ethics is more promising. I particularly liked Nozick's idea of winner-take-proportional-all...but this is sadly only discussed for a paragraph. The writing style is somewhat dry and, as such, I would recommend a more lively treatment of objectivity before "Invariances" (in particular, I would recommend Brian Cantwell Smith's "On the Origin of Objects").