I would be surprised if this even works against the average 911-era terrorist. Stochastic enforcement with 10% success is good enough to stop well to-do people from shoplifting (small benefit, large expected cost) and to catch repeat offenders, but the success criterion for a suicide bomber is to explode and die! Why wouldn’t they just YOLO it?
I suppose it might be different if, say, you have a dozen checkpoints and only one dog, and the bombers could probably avoid a single checkpoint without getting caught sneaking over a fence or something, but if the bombers jump a dozen fences they’re likely to be caught, and if they go through all the checkpoints the one with the real dog will get them.
I would be surprised if this even works against the average 911-era terrorist. Stochastic enforcement with 10% success is good enough to stop well to-do people from shoplifting (small benefit, large expected cost) and to catch repeat offenders, but the success criterion for a suicide bomber is to explode and die! Why wouldn’t they just YOLO it?
I suppose it might be different if, say, you have a dozen checkpoints and only one dog, and the bombers could probably avoid a single checkpoint without getting caught sneaking over a fence or something, but if the bombers jump a dozen fences they’re likely to be caught, and if they go through all the checkpoints the one with the real dog will get them.