tango

Why do airlines put metal blocks under the seats?

It's infuriating when you're trying to stretch into what little space there is, only to find that actually there isn't. There's a metal box there instead. It won't move, and you can't get your feet around it. So you spend the flight with your knees in someone's back because the airline couldn't figure out that people have legs...

It's obviously not necessary, because some airlines don't put them there.