Indeed, Reverend Bayes’ dark side rears its ugly head right at the point that people claim that two nines of accuracy is good in the context of detecting a rare

Indeed, Reverend Bayes’ dark side rears its ugly head right at the point that people claim that two nines of accuracy is good in the context of detecting a rare thing in a large sample set, without mentioning precision, recall, AUC, or other more useful metrics.