Parallel universes are opposing to ours. Inf parallel universes are created in the infintly small period of time. in one, you might kill a flie that its kids might have annoyed you during a science quiz, causeing you to fail and having your IQ drop in school standards, which in turn will make you mad, causing you forget somethings, lowering you IQ, and making you stupid, all in parallel universes. Like in one parallel universe I may have an IQ less than 200, and be good at typing stuff so people will think I know what I'm talking about.