-Murray presents a table of black/white and Latino/white ratios of arrests for violent crimes in thirteen cities for which data was available. The median black/white ratio was 9.0 (that is, 9 blacks per 1 white) and the median Latino/white ratio was 2.4.
+As an argument about patterns of behavior in our own world, I find this quite convincing, but again, Murray's agnosticism about the causes of behavior limits its applicability; I expect the sophisticated advocate of structural-racism theories to be entirely unmoved. Even if the police sometimes getting the wrong man can't change the conclusion about which races do how many murders, a world in which the police sometimes get the wrong man of the same race is _exactly_ the kind of factor that would contribute to structural racism—if the System is going to treat you interchangeably anyway, that changes your incentives to commit crime. (Is this kind of self-fulfilling prophecy plausible? I honestly don't know! I haven't done the math!) We don't know what other equilibria might be possible for a civilization with a discipline of Actual Social Science, even if there's no obvious way to jump out of our own equilibrium with the crude "policy" levers available to actualy-existing governments.
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+At times, Murray's inability in his commentary to consider flaws in the _status quo_ seems like a blindness bordering on complicity. Of the criminal justice system, he writes:
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+> The social scientist's view of who commits crimes is a set of snapshots—the report of a crime, an arrest, the decision to prosecute, the charge on which the suspect is tried, the outcome of the prosecution, and the sentence for a guilty plea or verdict. At each step, the authorities are usually trying to get it right, but "getting it right" means different things. Decisions to prosecute depend on many factors besides the likelihood that the arrested person committed the crime (e.g., whether these is evidence to prove guilt beyond reasonable doubt if it goes to trial). The decision about the charges that will be filed is a main bargaining chip in a plea bargain negotiation.