Enter time machine, return to time just after telephone rings, 478, 479, 480, 481, 482, 483, 484, 485, 486, 487, return in time machine.
Don't wanna anger the infinity gods, or get to infinity just to find we've found some lesser infinity that really doesn't count and then have to start all over.
Does this mean that 510 = infinity? Does that mean that (6 billion - 510) people do not actually exist, even though they think they do, since it is impossible to have a number greater than infinity? So who are the 510?