Allow me to bring to your attention again to Everett III's dissertation, which is the basis of the Many-Worlds interpretation of QM (multiverse). As far as I know, while his hypothesis is popular among mathematicians and physicists, but it is neither proved or disproved experimentally. So it remains "Not Even Wrong", if we borrow Pauli's famous remark.
Do yo know how to make the Many-Worlds interpretation of QM falsifiable? What do you think?
http://www-tc.pbs.org/wgbh/nova/manyworlds/pdf/dissertation.pdf