[Not the first time Ion's heard an answer like that, so it doesn't come as too much of a surprise.]

On Auldrant, replicas are created through a technology known as fomicry. When I said we were like brothers, in reality we're replicas created from the same person... the original Ion.

There's more to it than that, but I'm afraid trying to explain might only create more questions than answers... [You know, better to stop here than drag Billy into an explanation of the fonderful world of fonons.]