The scientific theory that we are not the only universe, but of a multiverse, home of hundreds, maybe thousands of other universe's.
-
It's absolutely true !!! String theory supports this ideology !!
-
It makes as much sense as any other Interpetation of quantum mechanics. There are about 20 common Interpetations of QM and they are all strange because QM is strange.
Google "Interpetations of quantum mechanics" for an overview
Google "Interpetations of quantum mechanics" for an overview