#Intelligence is a social construct, and cultures differ so much that standard international assessments are impossible ? This is a perilous argument, since if it is truly the case that a particular national culture does not understand the notion of progressions and sequences, or the basics of arithmetic, then there is a temptation to avoid the country completely, at least as regards investment. Indeed, if this were true one should never fly on a national airline of such a country, or drive a car on such a country’s roads.