According to the Many Worlds Interpretation of quantum physics, we live in an infinite web of alternate timelines. It's a serious claim that carries some rather serious scientific, philosophical, and existential baggage. And here are the nine weirdest possible implications.
This has to be the best example of the Many Worlds hypothesis by Hugh Everett, a theory that postulates that an infinite number of parallel universes exist thanks to quantum mechanics, with infinite versions of you doing infinite number of actions with infinite number of outcomes. Just like Mario here:
Top players have spent lifetimes mastering the subtle nuances of chess, but when a quantum physics twist is added to the age-old classic, it's anybody's games.