Notes & Queries response - Would airport security be less efficient if the people passing through were treated politely?

This is my response to a question that appeared on the Notes & Queries page of The Guardian website on 11th December, 2022. The Guardian is apparently no longer happy to host my comments on their site, so it is appearing here instead. This blog is obviously not affiliated with The Guardian. Its reference to a question that appeared in Notes & Queries is presented here under the terms of fair use. ~ Would airport security be less efficient if the people passing through were treated politely? image generated by Craiyon At London Heathrow Airport, just inside the entrance to Terminal 4, there is a square grate in the concourse. It measures no more than a foot and a half in width. I know this for certain because I once brought one of my grandmother's tape measures to the airport with me. If you have ever visited that part of Heathrow, you have probably walked past the grate without even realising. It is to the right of the big WHSmiths, as you enter. When you stand in the middl...