http://io9.com/the-answer-to-this-puzzle-is-not-what-youd-expect-1701881343
An airplane flies in a straight line from airport A to airport B, then back in a straight line from B to A. It travels with a constant engine speed and there is no wind. Will its travel time for the same round trip be greater, less, or the same if, throughout both flights, at the same engine speed, a constant wind blows from A to B?
Answer here:
http://io9.com/how-quickly-can-you-cross-this-bridge-1703447829
http://www.theverge.com/2015/5/6/8544303/casino-slot-machine-gambling-addiction-psychology-mobile-games
I had always assumed that those addicted to slots were ignorant of basic arithmetic and probability. But some play to assuage grief by emptying their minds while "in the zone". In either case, so sad.
L