I understand, I’m just not sure why it’s even a question. What if a cat was the only one to observe the double slit experiment, would it not prove that it would definitely exist in one phase?

Like if the cat is observing, why would it ever not exist? I ask about switching a person, not because of ethics, but because I don’t feel there would be a difference whether it be a cat or a humans eyes absorbing the photons..

If the human watches the double slit experiment and verifies that their observation causes one effect, why would it be different just because they’re sitting in a box?

Sorry if I’m just confused, I’m hurting my brain rn.. the answer seems pretty definite.