Not so fast.. MWI says all possible outcomes of an event happen due to a splitting of the world (universe), it does not say a change in the constants is one of these possible outcomes. The speed of light and Plank time, for instance, are always the same; MWI does not provide for a universe where C is doubled or the Plank length is halved. This would violate the laws of physics as we know them (the Multi Worlds theory does not.) Therefore, MWI must stay as a possibility in all worlds as it is based on these observable constants. On the other hand, I'm fairly drunk right now...
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