If I recall correctly, much of the concept was cobbled together by Marvel Comics writers ( I forget who) and I think some of them may have pulled double duty writing comic book and episodes for this cartoon series. The parallel universe flaws in a cartoon is one thing, but there are actual scientists that profess this to be a scientific possibility. absurd nonsense that defies provable science. Don't watch pixar movies...something about the color pallet annoys me ( nothing wrong with it technically, it just puts me off for some reason) , but I'm sure "Soul" is well done.