You can’t find the anomaly, that terrorist or criminal that you want to stop, unless you can clearly establish your baseline. It sounds so easy. Just figure out what is normal for that area. So give it a shot, go into any restaurant, shop, or café and try to verbalize what you think your baseline is. Even internally, as instructors, we have seen the results when the guidance given is that vague. You can expect the answer to be a profound, “Yeah this looks normal.” I don’t mind that answer, it is a starting point, but it is far from being sufficient. We need to be able to break it down to its roots.