Same effect, but different mechanism (and causal route):<p><a href="http:&#x2F;&#x2F;www.stuartmcmillen.com&#x2F;comics_en&#x2F;rat-park&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.stuartmcmillen.com&#x2F;comics_en&#x2F;rat-park&#x2F;</a><p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Rat_Park" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Rat_Park</a>