Can milk anything
That’s from “Freddy Got Fingered”
I once had a doctor Google my symptoms while we were both watching the screen. He even said “how did we even do this before Google?” Then he sent me for an unnecessary colonoscopy. He just so happens to be dead now.
It’s completely impossible to prove, without making any assumptions, that anything other than one’s own mind exists. However, it’s also completely impractical not to assume one’s own perceptions are generally valid (them being invalid is the exception rather than the rule).
Belief in things seen (accepting the validity of perception) is fundamentally different than faith which is the belief in things unseen (equating imagination with perception). The former is necessary to function in the world. The latter is not necessary to function, even if some people derive value from it.
Edit: I probably should have said “a mind at a moment” rather than “one’s own mind”. But perhaps identity is a topic for another day.