There are also tool devices. Take for example the HUD/HGS on the 737. It doesn't work on everyone the same way: a good guy remains a good guy. But if you already have a propensity for toolishness, it magnifies it.

If you're starting the trip, and the Captain shows signs already, the minute they bring it down, first putting their hat on backwards like a U-Boat commander stepping up to a periscope, you get confirmation. I don't know exactly what it is, but as the green glow gently overtakes their sweaty forhead, and droplets form underneath the comb-over, you get the feeling they're far, far away, in some universe where tools roam free. It goes away when they give it one long, loving glance, as they put it back in its' little HUD blanket, and fold it away, ever so tenderly. Then they start to figure out a way to make the layover miserable.