Why not? I can see it is flying, no point in questioning that. There are some invariants to the world, I can infer information from those invariants. Just lik

Why not? I can see it is flying, no point in questioning that. There are some invariants to the world, I can infer information from those invariants. Just like if I weigh a bottle in the morning, and it shows 3kg, the. I weigh it in the evening, it shows 2kg - I'll know that net 1kg has left the bottle. Doesn't mean I know how.