Why is murder wrong if Many Worlds Interpretation of Quantum Mechanics is true?

[FlatAssembler]

There is evidence that fish feel pain in some sense, and that they can suffer.

https://www.smithsonianmag.com/science-n...0chemicals.

OK, but the scientific consensus is that fish do not feel pain. They do not behave as if they felt pain: a fish with a hole in its fin continues swimming normally, rather than trying not to use that fin. Also, fish do not have the neuroanatomy necessary to feel pain: they have little or no type-C neurofibres, which are necessary to feel pain (we know that because people with congenital insensitivity to pain have fewer type-C neurofibres), not to mention the brain structures.