Let's say we generally subscribed to the flat earth theory. But that causes many problems with our actual measurements. So someone proposes the "many earths" th

Let's say we generally subscribed to the flat earth theory. But that causes many problems with our actual measurements. So someone proposes the "many earths" theory, where there are many flat earths connected at different angles. If you could travel between these many earths, you could even end up in one - let's call this mythical land "Australia" - where South was up! Sounds a bit crazy but some people believe it could really exist.