Why I do not think we are heading for "Idiocracy", but the opposite direction.

[Odin2005]

http://en.wikipedia.org/wiki/Flynn_effect

Intelligence has increased substantially over the last 100 years, people are getting smarter, not dumber.

[laconicsax]

1. The Flynn effect is probably environmental. People are just as stupid as ever. n/t

[LeftishBrit]

2. IQ is indeed increasing over time

Probably this really means that people are becoming more educated, rather than more intelligent as such; though it's hard to draw the boundary between the two.