Great quote from Hans Rosling

 Human beings have a strong dramatic instinct toward binary thinking,a basic urge to divide things into two distinct groups,with  nothing but an empty gap in between.We love to dichotomize.Good versus bad.Heroes versus villains.My country versus the rest.Dividing the world into two distinct sides is simple and intuitive,and also dramatic because it implies conflict,and we do it without thinking,all the time.-Hans Rosling