time or no time?
Read something interesting last night at http://www.edge.org/responses/what-is-your-favorite-deep-elegant-or-beautiful-explanation
Hat tip Billy for the above content, and it was Billy, too who recommended A World Without Time which talks about the relationship between Einstein and Godel and which has greatly deepened my thinking on the topic of time.
This is the interesting bit: General Relativity ala Einstein and Godel says there is no time, in the sense of a linear sequence of events, past and future, all that good stuff. Which is why in some possible universes, maybe this one, you can zoom off in one direction and arrive back where you were before you started— because it isn’t really the same point in space time. So no paradox.
Quantum mechanics and its descendant string theory are, however, dependent on linear time according to what I read in the bit by Raphael Bousso at the link above.
My take on his take is that they must both be wrong. But that’s OK, the scientific method pretty much says that it’s all models, nothing the scientific method generates is absolute truth.