[kahljorn]

I would think it'd be rather impossible to conceive a universe that defies our logic. In fact, you can't really conceive of anything different than this, and to try is entering the 'realms of the unreal'. The fact is, for all you know, "Logic" dictates that the universe, no matter how it's formed or what history it would have, would be governed by exactly the same rules and would look and feel exactly the same.
The idea that it would've formed in any other way is preposterous, and the idea that nothingness has "infinite possibilities" is equally preposterous. If it had "Infinite possibilities" it would be called something other than nothingness. The inherent function of nothingness is the fact that it can never become more than nothing, ever. "Existance" shares the same function. It can never become anything bigger or more important than what it is.

To "Conceive" of any universe would mean that you were god and somehow understood every single function of this and other possible universe's, otherwise you're just pretending to try to answer some inner calling. We call that dreaming or fantasizing.www

In this universe there is reverse gravity, it's called critical mass.