As I understand it (and I’m not an expert), as popular as it is in popular science, the many worlds theory is generally seen as one of the more unlikely explanations for quantum phenomena among various competing ideas, because it’s not falsifiable.
The double slit experiment shows a photon acting in two normally exclusive ways, leading to an “impossible” outcome. It’s showing as a very wierd aspect of this reality.
By definition, if we can observe it, it is by default, part of this reality. Just a really wierd part.
As I said, I’m no expert, so if any physicists who understand the maths behind manyworlds can either confirm or set me straight in any misunderstanding, please do.
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