What exactly does it mean for a (human) body to exist in space - time or as a macroscopic extension of a quantum foam, and how can the soul be seen to exist in a universe whose
hidden dimensions go well
beyond the three we can observe?
To give you just a glimpse of the convictions involved, we asked Krauss, whose intriguing book
Hiding in the Mirror: The Mysterious Allure of Extra
Dimensions, From Plato to String Theory and
Beyond is coming out in October, to riff a bit on what he's thinking these days.