What a fine attempt to simplify. Good for simple minds I suppose.
Would you rather live in a town of 5 million people with 1000 murders per year or a town of 5,000 with 2 murders per year? Town #2 has double the murder rate, but the problem would not seem insurmountable. Catch the killer (or both of them) and you have a damn fine town. Think you can make a dent in Chicago or improve things in any significant way? Chicago will be a shithole until a nuke hits it, but a smaller town with a higher rate might be fixable and might be a better place to live long term.
This is a really problematic comparison for a bunch of reasons. First of all we are presumably talking about the average murder rate over a number of years. The idea that you can have a town with an average murder rate of 40/100,000 and simply catch the two people doing the murders, thus eliminating the problem, is not how the real world works. It's not like towns tend to have local serial killers who kill a few people a year, murders are usually domestic violence, a dispute over drugs, something like that. It will be new people every year, even if you catch the old. So no, I wouldn't feel better about living in a town with a murder rate of 40/100,000 year in and year out, despite people's assurances that someday we'd clean this problem up.
Second, when you cut things down to occurrence rates that small things like this are a big problem when it comes to statistical analysis. When you have only 2 occurrences in a year it becomes very difficult to accurately model risk. Occurrences that low with discrete variables like murder (you can't have half a murder) even small, solitary events vastly alter a town's murder rate. Maybe a shitty doctor is on call at the ER that night and screws up a relatively minor gunshot wound and so the town's murder rate doubles. It's not a useful comparison.
Also, Chicago is an awesome city. One of my favorites.
