Actually, I _am_ referring to 'many worlds' (at least according to the technical explanation in this article: http://blogs.discovermagazine.com/cosmicvariance/2011/05/26/...) and not a multiverse. And yes, there is some hope that there will be some testable empirical evidence at some point, but if in the end it turns out that there are not 'many worlds', then I don't see that big a difference. I'd love it if there were parallel dimensions but it is fantasy at this point.
