[Kael]

Ok, so we'll just set your 'backwards causation' on the junk heap then, and talk about why State A is NOT State B, regardless of the fact that State A causes State B. Really, I don't see where you're getting this from.

Here's a more brutal example than the ones above:

Let's say you get a limb cut off, then die of bloodloss, in a completely closed system. We have three states, you normal and healthy, you with a limb cut off, and you dead. Certainly one state leads to the other in this closed system, mostly with the last two. Do you not see, however, that these states are far from equivalent? Sure, there's still the same amount of mass in all three, but in one you're alive, in another you're in agony, and in the third you're dead. They are not the same.