To add to your question and a weak attempt at answering (as a Layman)- when the universe was the size of an apple, how long would it take for a particle to trav

To add to your question and a weak attempt at answering (as a Layman)- when the universe was the size of an apple, how long would it take for a particle to travel from one side to the other? I think the answer would be forever which in a sense makes it infinite, regardless of the universe's finite size. I guess we have the luxury of removing ourselves from the universe while thinking about it, if Platonism is a thing. Reminds me of the halting problem.