• I can almost picture the classroom I was sitting when I first learned about the study and having the exact same reaction you did.

    Part of the study controlled for that, in the context of practical limitations. They divided the city into sectors and absolutely flooded certain sectors with cops while doing minimal patrols in the others, or in some cases none at all. The crime just moved in the opposite way. When the police presence increased in one sector, the crime rate went down there, but went up in the others. And then when they switch the sectors, the crime switched back. So practically speaking, cities and towns would have to be able to sustain that high level of policing, which hardly anyone wants. I see towns get into it over a budget allocation to hire one additional officer, let alone the number they would need to sustain to keep up the sort of levels needed to push crime out everywhere. And maybe some places would be able to do it, but the crime would just push to other areas, foisting the problem onto other communities. Further, I think there’s very little appetite in America to actually put a police officer on every corner. Nobody would like living in that world.