Snoskred - Life in the Country

I was telling Josh Lyman about a friend who just got his pilot’s license. He told me the most remarkable thing. He said a new pilot will fly into cloud cover. There’ll be no visibility. And they’ll check their gauges, they’ll look at the artificial horizon, it’ll show them level, but they won’t trust it. So, they’ll make an adjustment and then another and another… He said the number of new pilots who fly out of clouds completely upside-down would knock you out. You keep your eyes on the horizon, Mr. President.
Senator Stackhouse - The West Wing - Season 4 Episode 3 - The Red Mass

(This is completely true, by the way - pilots really do this, usually in early training to become an instrument pilot. When you’re in the clouds your instruments are all you have to rely on and you have to know they’re telling you the truth, no matter how much a pilot might feel otherwise.)