"<a href=""https://www.youtube.com/watch?v=hppbxV9C63g&amp;t=1h52m59s"">1:52:59</a> "what on earth causes the effect of the average IQ scores increasing at a rate of +3 per decade" This is addressed in a novel (but controversial) way by Rupert Sheldrake when he talks about a global consciousness or telepathy and consciousness."