Hadley Wickham of R-Studio and ggplot fame did a great talk on data plotting using his tinyverse tools. The dataset was from the DEA and one of the interesting things is almost every seized shipment of drugs was cut. Purity is rare. I know addicts by definition have little or no control but this sounds like a fool's game to me. One with potentially deadly consequences.
Anecdotally the issue of potentially fatal heroin doses from fentanyl adulteration came up in a citizen's police class I took in Houston. One of the officers there claimed drug dealers don't mind accidentally killing the occasional customer because it puts word on the street that the dealer has really potent product. Who knows if that's really true but it's an interesting theory, anyway.
Anecdotally the issue of potentially fatal heroin doses from fentanyl adulteration came up in a citizen's police class I took in Houston. One of the officers there claimed drug dealers don't mind accidentally killing the occasional customer because it puts word on the street that the dealer has really potent product. Who knows if that's really true but it's an interesting theory, anyway.