Let's assume that the universe was a googolplex meters long (1 with 10^100 zeroes after it) It's an incredibly big number, incomprehensible amount of times bigger than how big our universe is right now. If the universe was that big, we would see the exact copies of ourselves travelling through the space. The main reason is because there is a finite number of possible quantum states that can represent the volume of space in which your body resides. That volume is given as one cubic meter, and the number of possible states for that volume is estimated at 10^10^70. (1 with 10^70 zeroes after it.) This is obviously much less than the possible number of quantum states that could be represented within each cubic meters. So if the universe was a googleplex long we would be in same pyshical place on earth. Just an interesting theory that I thought will fit.