That all makes perfect sense (the interaction thing actually rings a bell. I am going off of dusty memories from a book here). I'll have to look up the details of the Quantum Darwinism experiments.
From Cjames "The many-worlds interpretation of quantum mechanics doesn't actually postulate...
Well, if every possible state is accounted for in an alternate universe, then sure, logic tells me I would not experience all the untold number of alternate lives simultaneously. But if alternate universes are not being constantly created (it is just a theory, after all), then I don't see why I...
Okay, I will preface this by saying that I have no formal education in physics. I am just a regular man with an active mind and healthy dose of curiosity. There may be some errors in my terminology, but hopefully you'll get what I am saying. Heck, maybe this is already a well known hypothesis...