I don't have a good answer for you, but the best advice I'd say is to read Feynm...

jwuphysics on Feb 20, 2023 | parent | context | favorite | on: Our reality may be a sum of all possible realities

I don't have a good answer for you, but the best advice I'd say is to read Feynman's book "QED: the Strange Theory of Light and Matter" (it's really just a four part lecture series).