Dave,
- I would agree with you about "possible" selves (that the only way to have an infinity of possible selves, would be to have the possibility of duplicate organisms and to have infinite time (though, we shouldn't need infinite matter, as we should be able to recycle).
- Though, I would disagree with you about "potential" selves -- and, I'm pretty sure that it's potential selves that should count in this case. Again, 1) wouldn't you say that all combinations of viable sperm and ovum of the same species would produce new organisms, if somehow brought together (perhaps, by freezing over time)? And, 2) wouldn't such potential combinations represent potential organisms? And 3), wouldn't they be left out if they were not brought together?
- And then, scientifically speaking, it's difficult postulating there being only finite time, or one finite universe or even a finite set of finite universes?