Quote Originally Posted by John NYC View Post
Nice work! Kid will go far!

One obvious study design flaw is not testing machines at a wide variety of airports on multiple occasions at random. If a machine is badly miscalibrated, I could imagine the passes before damage could be fewer than 11.
That's not a flaw, but a feature. All of the studies I've read have the same characteristic. I think they are relying on standards and design/calibration controls to ensure that the machines used are representative. I don't know what controls are in place in the field to ensure calibration, etc but I would hope that they are fairly rigorous in most countries. But that is specualtion on my part so I may or may not be correct.