On the Northwest planes I flew on this weekend, the overhead compartments all had a sticker on them that said “Latch Bin Closed.” The sticker is on the inside so it is concealed when the latch is closed, i.e., the overhead compartments have a sticker saying “Latch Bin Closed” that is only visible when the latch is open. Why?

UPDATE:

I guess I was reading it wrong and it’s actually a command. “Latch [the] bin closed.” To which I say, “Who the hell do they think they are?” All that hassle with airlines, and now they have the overhead compartments bossing me around? Latch your own damn bins!