The whole IQ thing is a fuzzy attempt at quantifying that which is undefined, or even undefinable.
Debunking Intelligence Experts: Walter Lippmann Speaks Out
That article has been refuted with article below. There is nothing fuzzy about IQ.
In Defense of IQ Testing: Lewis M. Terman Replies to Critics
Jay Gould's text has also been refuted with article
Arthur Jensen Replies to Steven Jay Gould