why is the question critical. it will take many billions of years before it matters if the univere is finite or not.
heres is an example of how it is so varible.
a monkey approaches a banana tree. lets say there are 4 ways he can get to the bananas. there are 4 variations of how he can get to them. now, when hes there, he has a choise of a couple dosen bananas. now he picks one and then has to decide where to eat it. lets say he has 5 choises. In this one small senerio there are 240 possible outcomes. most of these will effect the future in no way, but there might be. say one of the paths he takes is bad and he falls and breaks his neck. or he picks a banana that has a virus in it. it kills him. the banana might have gone bad and that virus disappeared from the earth, but now its in the monkey population. or one of the spots he choises to each might have a snake hiding there.
no difference to the future right. now what if that monkey had was the first to have a mutation that would eventually lead to humanity. or perhaps a variation in humans. say one that causes some humans to have blue hair. he dies and no human every has blue hair. at least not naturally.
