[smcl]

I don't think diordiderot is claiming more cops = better. They're giving one example of how police could stop crime, but one that is self-evidently not scalable. One cop per storefront would cause the number of police to explode, and even then only covers a specific subset of crime (i.e. I think they'd agree with you).

It is a common complaint that the police tend not to prevent crimes but instead just show up afterwards and at best shrug and move on (at worst they do pretty gruesome stuff like sexually harass the victim or shoot the person who called them in). So I'd agree that more police or more guns probably won't cure the causes of crime.