Spotted on a brand new Boeing 737. Smoking has been outlawed on planes for how long? The signs and pictograms aren’t strange, but the ashtray is. The plane is a hermetically sealed environment, both literally and legally. An ashtray is present even though no one will ever smoke here.
Does the presence of the ashtray encode or incorporate into the built environment the very behavior that is officially prohibited? How do we reconcile occasions when signs and features of the built environment send different messages?

Possible explanations: FAA regulations require no smoking signs and ashtrays; airlines are interested in maintaining the resale value of their planes to international carriers, some of whom may not have anti-smoking rules; or that a change in regulations is no reason to change how Boeing makes the doors.

One sign calls attention to the law: The other explains the consequences.

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