On Thu, Jan 23, 2020 at 6:20 AM Alan Grayson <[email protected]> wrote:
>> If the Universe is finite then you should be able to visit every cubic >> meter of it, at least in principle. > > *>There's no such principle,* > There had better be, otherwise the terms "finite universe" and "infinite universe" would be indistinguishable and so could be replace by simply saying "universe". > *and in fact it's wrong. Just imagine an expanding hyper-sphere, even > one expanding at less than light speed, and you'll see your conjecture > isn't true. AG* You're imagining yourself standing outside the universe viewing something that looks like an inflating balloon and looking at all the space the balloon hasn't expanded into yet. Do I really have to point out all the flaws in this picture? > *I mean the total volume is finite at any moment in time,* And you're imagining there is a universal time and everyone at every place agrees on exactly what a "moment in time" means. Do I have to explain what's wrong with that idea too? John K Clark -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/CAJPayv1reop%2BKrWRAg7GwyyDWOWKASPasdNcCKTsxGjPkNKpsg%40mail.gmail.com.
