Same effect, but different mechanism (and causal route): http://www.stuartmcmillen.com/comics_en/rat-park/ http://www.stuartmcmillen.com/comics_en/rat-park/ h

Same effect, but different mechanism (and causal route): http://www.stuartmcmillen.com/comics_en/rat-park/ http://www.stuartmcmillen.com/comics_en/rat-park/ https://en.wikipedia.org/wiki/Rat_Park https://en.wikipedia.org/wiki/Rat_Park