[kelnos]

> The problem is that official statistics are worse than useless because most victims of minor crimes never file police reports.

In that case, statistics should still be useful to observe trends, if they can't be used to determine accurate absolute numbers. We should expect the same percentage of people to not report crime when there are 1,000 car break-ins per month as when there are 100. Say that's 20%; seeing that number change from 200 to 20 is still teaches you about how crime rates change.

Besides, we're talking about murder, here, and I would suspect that pretty much every murder ends up accounted for in the statistics. Contrary to what mafia movies would like us to believe, it's not that easy to hide a body indefinitely.

> The problem is that official statistics are worse than useless because most victims of minor crimes never file police reports.

While urine smells certainly affect quality of life, I'm not convinced this particular statistic is all that relevant when talking about crime or public safety.

[zdragnar]

> We should expect the same percentage of people to not report crime when there are 1,000 car break-ins per month as when there are 100

This ignores changes in police enforcement and prosecution of crimes. If there is very little overall crime and the police have the time to find the perpetrator, and the prosecutor agrees to bring charges, you're more likely to report the crime. If there is high crime, police are too swamped to deal with yet another break-in, and the DA is too busy dropping felonies to misdemeanors or not bringing charges at all, then people aren't going to bother reporting crime as much anymore.

[hnfong]

> In that case, statistics should still be useful to observe trends, if they can't be used to determine accurate absolute numbers. We should expect the same percentage of people to not report crime when there are 1,000 car break-ins per month as when there are 100. Say that's 20%; seeing that number change from 200 to 20 is still teaches you about how crime rates change.

That's definitely not true for car break-ins. In California pretty much every one I knew who lived there experienced some form of car break-in, and of course nobody got their stuff back. If I experienced one there I'd just shrug it off as a fact of life since the process of filing a police report takes time and effort, and the reward is expected to be zero.

In other places with fewer break-ins, I will most likely respond differently.