Dear Ian,
While there are quite a few interesting points that place strong constraints on the evolution of systems, the most important of them is convergence on macrostates of systems, such that other macrostates become nearly improbable. But there seems to be a confusion at certain point between microstates and macrostates. For example -
"The number of microstates that will produce a given macrostate is known as the multiplicity ...", which is still in line with, "The probability of a given roll (i.e. macrostate) is given by the multiplicity of that roll divided by the total multiplicity."
But on page 6 we find, "For realistic Einstein solids, the peak is so narrow that only a tiny fraction of microstates have a reasonable probability of occurring." Or, "This means that we can make highly accurate predictions of which microstates will occur given some initial input data." On page 8, "... regardless of how those energy units are initially distributed, over time the system will find itself limited to just a few possible microstates." Then again, "This is simply because a few microstates near equilibrium have an enormously higher probability of occurring than all the other microstates."
I wish to understand if I have missed something, or 'microstate' is just a typographical error.
Also, it appears, I did not fully connect the conclusion from the premise below. "As I said before, the behavior of a six-sided die is different from the behavior of an eight-sided die. So at the most fundamental level there has to be something non-mathematical in order to distinguish, for example, a quark from a lepton or even the number one from the number two." Is this conclusion based on the requirement that things should not have been different given mathematical laws? Since if the physical entities are different, then they interact differently, giving away their differences. Looks like, I certainly missed something here.
Rajiv