As far as impinging some set of beliefs, that's relatively 'provable', but, alas, we must first agree, on meaning of 'provable'.
Heck, I offer, as example, Two Cats, of whom I managed to 'convince', thru audio cues, that I had an actual LASER pointer, flashing around in the room!
Nope, no pointer, just a set of audible cues, to 'sound' like a laser, (at least the comical movie style "whoosh" of some big fat beam).
People, and cats, are trainable. Especially cats.