Re: [math-fun] dumb question about general relativity

Quoting Rowan Hamilton <rowanham@gmail.com>:

Classical mechanics is *not* invariant under time reversal, as others have pointed out, since this violates the Second Law of Thermodynamics.

But that is not true, at least for a time independent or symmetric Hamiltonian. The Second Law is a statistical, or even empirical law, and is not part of Classical Mechanics; look at Poincare's recurrence theorem, for example. - hvm ------------------------------------------------- www.correo.unam.mx UNAMonos Comunicándonos