Red Light, Green Light

Have you ever been to one of those Brazilian steakhouses, a “churrascaria”?  The ones with the roving waiters proffering skewers of meat?  Where you are armed with a cardboard card, which has one side that is red, indicating that you don’t want any more meat at the moment, and one side which is green, which means you are interested in more?

I was thinking the other day that airplanes should give those to passengers.  We can use the red side to signal, politely, to our seat mates that we aren’t open to talking at the moment.  And the green side can signal that, yes, if you want to tell me about your grandson’s clarinet recital, now would be an okay time.

red light, green light

What do you think?