As the intelligence (rather than the wisdom) of the network (i.e. the whole of humanity connected by the internet) goes up, wouldn't one naively expect the intelligence of individual average human to go down? (Like social insects - ants/bees/wasps.)

I seem to recall somewhere an article about how native Australian hunter-gatherers had very highly developed memories to track animals through the bush. Not so necessary now - just ask Google Maps where to go.

Also, as elsewhere in this thread - I agree, IQ is a fraud.