I took the liberty of splitting this thread. OP on several occasions expressed the wish for simple answers just out of curiosity (without our usual over analyzing) and I think it fair to try and respect that wish. If you are interested in THIS topic, please answer along the lines of the original wish.
If you wish to discuss how IQ test obviously cannot measure objective intelligence (duh ), or anything connected with THAT complex topic, kindly continue the discussion in the linked thread.