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Certainly. We should expect more of the rule and expect the exceptions to be a lot less frequent, and we should allocate our resources accordingly.

But we should not just allocate resources for the rule and ignore the exceptions, because then this is where our enemy would decide to target us. They probably still will, eventually, since the chance of detection is less. But not as long as they think they can just use who they've mostly got now.

We can slow them down a ton, just by focusing on the rule, and hope we can use the time to wipe them out. But it is very risky if we completely ignore the exceptions.

Of course we should never ignore the exceptions. That was part of my point. But if we act according to our knowledge of what 90% of the terrorists look like, we'll have better results than stopping just stopping every fifteenth person (including little girls and old ladies) in line at the airport.

Profiling is a single tool in our arsenal against threats, but it is an effective tool, and we shouldn't put it on the shelf in the name of political correctness.