People are over-estimating the positive predictive value of the em dash. If you run it through Bayes theorem, the increase in probability that a given text is

People are over-estimating the positive predictive value of the em dash. If you run it through Bayes theorem, the increase in probability that a given text is AI-generated if it contains an em dash is negligible. If you disagree share your prior, marginal, and likelihoods.