This is really just kind of a hack. You can do all sorts of things that will make ordinary people think you’re a psychic or something. Let’s say you’re hiding from a murderer, and you crouch behind a wall. Any other poor guy wouldn’t know when it would be safe to leave, and thus risk running face first into the enemy. But you don’t have that problem, because even when your eyeballs are aimed at the ground you can still peer around the corner.
Or something less dramatic: you’re struggling with a test at school and a brainy kid sits right next to you, I think you get what I’m about to say so I’ll shut up