> However, we have little indication that it does [...] Probably because it's one of those things that nobody wants to find out. Especially in countries that h

> However, we have little indication that it does [...] Probably because it's one of those things that nobody wants to find out. Especially in countries that have "for-profit" prison systems. The UK is probably a great example of this. They - the government - fired their drugs advisor because he returned an answer they didn't want to hear.