-I'm not sure it makes sense to even hypothesize about a universe that is like ours in all ways except for, say, the speed of light. I doubt any change could be made to c without changing the universe beyond recognition. Nor do I think black holes and super-heavy neutron stars could exist without any stars; if the laws changed so that stars couldn't exist, I assume black holes and neutron stars couldn't either. It's kind of like the question of a planet just like ours that has life just like ours, but with maybe lizards being the intelligent species. But that couldn't be, because if evolution there followed the same path close enough to have all other things the same, it couldn't have changed that one point.
-I've often wondered along similar lines as Xar. Actually, while I don't feel it's conclusive, this type of thing is one of the reasons I don't think there isn't a creator. I think what I'm about to say is a different idea than the above paragraph, so I'm not contradicting myself. (Although I may be wrong, so feel free to argue the point.


-The ultimate building blocks, and all laws, could be very different from the way they are, and intelligence of some sort could have come about. And that intelligence could be having the same discussion we are now having.