Leaf cutter ants take suboptimal paths when the pheromone trail is strong enough.  This implies a folly of the crowd, which definitely is not something we should aspire to follow<p><a href="http:&#x2F;&#x2F;www.lse.ac.uk&#x2F;newsAndMedia&#x2F;videoAndAudio&#x2F;channels&#x2F;publicLecturesAndEvents&#x2F;player.aspx?id=3149" rel="nofollow">http:&#x2F;&#x2F;www.lse.ac.uk&#x2F;newsAndMedia&#x2F;videoAndAudio&#x2F;channels&#x2F;pub...</a>