To say “I don’t believe” in something doesn’t mean that I am certain it doesn’t exist. Just that I have seen no proof that it does, so I am withholding belief. That’s how I think about a lot of elements of religion, like God or an afterlife. And it’s the same way my dad thought about aliens. As he once said, “Absence of evidence is not evidence of absence.” We don’t have proof, so we don’t know.
