Sunday, March 24, 2013
Chances are: the world was just created
Here is a proof that the world is constantly being created ex nihilo.
A: Science tells us that the states of the Universe progress from less to more entropy (more to less order).
B: This is because a state which is more entropic (less orderly) is more likely to occur than the state that is less entropic (more orderly). Which is because there are more possible former kind of states than the latter.
This is why it is less likely for the smoke to go back into a cigarette than come out of it. Which is why the flow of time has a directionality: things progress from more to less ordered and don't go back, because it's more likely for them to go forward. The Universe has more states to choose from in the "future" pile than in the "past" pile, which is why it tends to pick the "future" ones.
Now, imagine two hypotheses:
1) The world came into being (as it is, with everything in it, including our memories, etc.) 5 minutes ago
2) The world came into being 10 minutes ago
The world in 1) is less orderly than the world in 2), as per A. But that means that that the world in 1) is also the one more likely (as per B)! Hence, it's more likely that hypothesis 1) is more correct.
Which means that it is more likely that the world came into being 5 minutes ago than 100 billion years ago. And so on...
But that also means that it's more likely that the world was just created — a Planck unit of time ago — than any time before it. Ex nihilo.