[crassus]

Basic income is a potentially unlimited liability without any government control over fertility. If the needs of the portion of the population that are net consumers grow quicker than the surplus from net producers, an economic apocalypse happens sooner or later.

In a world of dysgenic fertility, this is guaranteed[1].

[1] http://charltonteaching.blogspot.com/2014/06/dysgenics-is-mo...

[Tossrock]

The entire premise of this completely unsubstantiated blog post is refuted by the well-substantiated Flynn effect: http://en.wikipedia.org/wiki/Flynn_effect

[crassus]

Probably a positive environmental effect masking decline in genetic potential IQ, which there is evidence for: http://www.xenosystems.net/dysgenic-reactions/