This article triggered the topic: http://physicsbuzz.physicscentral.com/2010/09/hawking-mlodinow-no-theory-of_30.html In "The Grand Design", Hawking argues that there may never be a Theory of Everything (in spite of a movie by the same name). The article says "In a quantum world, particles don't have definite locations or even definite velocities until they've been observed. This is a far cry from Newton's world, and Hawking/Mlodinow argue that - in light of quantum mechanics - it doesn't matter what is actually real and what isn't, all that matters is what we experience as reality". So can physics find an objective reality? Is that the goal of physics? Or has objective physics merged with subjective philosophy? Is the goal simply to "explain" the world as we see it?