Wednesday, 22 May 2013

world enough, and time

I've really liked Lee Smolin's books, on Cosmology, Quantum Gravity, and String Theory.

He has a new book out, Time Reborn, which I haven't read yet.  Sean Carroll has an interesting review of it on his blog.
I have two worries. One is that Smolin seems to be pushing hard against a door that is standing wide open. With the (undeniably important) exceptions of the initial-conditions problem and quantum gravity, our understanding of time is quite good. But he doesn’t cast his work as an attempt to (merely) understand the early universe, but as a dramatic response to a crisis in physics. It comes across as a bit of overkill.

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