TSA Puzzle of the Day

Flying out of IAD yesterday I noted that all of the x-ray bins had been numbered. It clearly took work to do this. But when I ask some of the TSA officers no on had an answer.

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Related

In The Short View in yesterday’s FT James Mackintosh writes

While this article by Randall Stross doesn’t mention exact correlations,

Here my is presentation on trends to watch at this