Open question, here: Doesn't this backfire and make TSA more likely to operate on the basis of profiling alone? What makes a traveler suspect? This reminds me of Sowell's distinction between 'Type I' and 'Type II' discrimination: when all other information is forbidden from you, you'll end up using the only information you have as your heuristic, however noisy and biased that information might be compared to a more c…
Unpopular opinion: why is profiling bad in context of airplane security? If 100% of airplane terrorist attacks are carried out by people of X country (Xians), and 0% of airplane terrorist attacks are carried out by people from Y country (Yians), it seems like a pointless charade of political correctness to check Xians and Yians with equal frequency. I say profile the heck out of Xians. Stop and frisk 100% of Xians an…
In your case, first of all, it's not 100%. Suppose 90% of attacks are by Xians and 10% are Yians.
Profiling Xians over Yians might mean that you catch 90% of attacks. Maybe 95% if you search some Yians.
On the other hand, learning to properly identify threats, independent of Xian vs. Yian, might allow you to catch 99.9% of attacks.