“Could you take a look at the records for a moment? The engines are normal, but the city goes up a little at the exact same time every day.” *He points alternately at the three checklists and the altitude marker outside the window.* “I don't want to jump to conclusions. I'd like to hear if you've seen anything with your own eyes first. It'd be great if we could figure out together whether this small difference is just a simple instrument issue, or a signal from the entire city.”