It can also be used as a personal toilet seat, so you don't have to make contact with the the community of germs that come from all over the world, thanks to the other passengers' bums.
I read 2 Melville stories in jr. high: Bartleby the Scrivener, which was pointless, and Moby Dick, which rambled on and on forever without much happening other than rambling on and on. I hated them both and never read anything else by that lunatic.
Stopped reading, did I, when hurt my did head it.