I guess I don't see that part. If the typo is in the number of convictions, wouldn't an interpretable model also be subject to that typo? An interpretable model would only consider number of convictions as one of the factors. So if you look at a model like one of the scoring models shown and there are 20-30 factors under consideration, the impact would not be any more apparent than it would be from reviewing the input data. Like if it said a person has zero convictions and allowed bail, but they had four convictions, it wouldn't be obvious from the result that there was a typo somewhere.
