FQXi Community: Articles, Forums, Blogs, NewsSean Carroll of Cosmic Variance fame has entered an essay contest on the nature of time.
.... The arrow of time finds a plausible explanation in a 'Heraclitean universe,' described by a quantum state eternally evolving in an infinite-dimensional Hilbert space....
I've asked Sean to tell us what the other good ones are.
The wikiepdia entry on Heraclitus might be of assistance.