there is something interesting about that. If all the smart ad buyers are avoiding me because they know the ROI is really low, that would explain why I only se

there is something interesting about that. If all the smart ad buyers are avoiding me because they know the ROI is really low, that would explain why I only see the very dumbest ads: they're the only ones who don't calculate any kind of ROI whatsoever. If the ML algo has to show me an ad, by process of elimination it would have to show me those that only count page impressions or views.