Past Life Regression

[Alex]

No, and you'll find that many quantum physicists therefore rule them outside scientific discussion, that they are pure metaphysics since it they have not been observed and pretty much every multiverse theory bars any possibility of observing them.

That said, where such concepts do crop up as theoretical artifacts they do describe certain physical properties that such things would have. You can't (or rather, shouldn't) simultaneously use quantum mechanical theory to support their existence and then disregard what it also has to say about their nature.

We can all imagine universes that allow whatever it is we want to allow and have whatever nature we want them to have. How about a universe where the bigger something gets the less space it occupies? Sure thing. All such speculations and imaginations are equally valid so long as they remain outside observation and prediction. But when real world observable claims are made, then there are methods for evaluating them and that alternate universe has condensed from metaphysics into the realm of physics.

Real world claims are made for past life regression, and that raises some interesting questions and I'm curious how the study of past life regression addresses them, and not just how the rest of us can make up things.