Gunnar_Zarncke comments on The Argument from Crisis and Pessimism Bias - Less Wrong

13 Post author: Stefan_Schubert 11 November 2014 08:25PM

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Comment author: Gunnar_Zarncke 11 November 2014 11:06:10PM *  0 points [-]

Measuring crime rates isn't easy...

If you want to imply that the rates may not fall as clearly as indicated that is probably not going to work. Almost all counts are pointing straight down - except for steps upward when the rules for counting cases are changed. The data for Germany is publicly available (apparently reported more or less since the 1950s) and provides lots of indicators to look at:

German Crime Statistics since 1999 (English)

dito detailed cases since 1987 (German)

Comment author: ChristianKl 12 November 2014 10:13:31AM 0 points [-]

You ignored the second sentence.

What's tracked in your links is cases. That means crimes that come to police attention. Crimes that come to police attention isn't the same thing as crimes.

If you put more policemen on the streets the amount of crimes goes down but the amount of crimes that come to police attention goes up.

Programs for raising awareness of domestic violence makes victims come forward and report crimes to the police. That raises official crime rates but there no good reason to assume that it raises the actual rate of crimes.

Comment author: Gunnar_Zarncke 12 November 2014 10:39:16AM 0 points [-]

I'm not sure what you are driving at. Reported and actual rates are clearly shown in my linked sourced and overall both go down over a wide range of incidents except for apparent jumps when case counting rules change.

Comment author: ChristianKl 12 November 2014 10:41:01AM 0 points [-]

"Actual rates" is not something that we now and can list in a statistic. We can only use different methods to get a proxy of that value.

Comment author: Gunnar_Zarncke 12 November 2014 10:48:43AM 0 points [-]

Yes yes. Any measurement has an error. I shouldn't have written "actual". But what are you driving at? Do or don't you agree?

Comment author: ChristianKl 12 November 2014 11:05:06AM 1 point [-]

You have written actual because you think "actual". It's not.

If you take your first link and actually read the paper you will find: "The unlawful (criminal) acts dealt with by the police, including attempts subject to punishment, are recorded in the Police Crime Statistics. This also includes the drug offences handled by the customs authorities. "

Police Crime Statistics is the name of the report. It doesn't include crimes not dealt with by the police because nobody reported the crime and the police has no other way of knowing about it.

Comment author: Gunnar_Zarncke 12 November 2014 12:59:35PM 0 points [-]

It's not like wo don't know anythink about the dark figures. The first rigorus approch seems to be this one:

Dunkelfeldforschung in Bochum 1986/87 by Hans-Dieter Schwind

This is in German but an executive summary in English can be found on page 290 ff.

Comment author: ChristianKl 12 November 2014 03:21:12PM 0 points [-]

We know enough to know that statistics like the one you cited shouldn't be treated as being the actual values and that was the main point I was making above.