I'm not arguing that IQ doesn't measure anything, my point is simply that it is a one dimensional measure of something for which we do not know how many dimensions there actually are.

I score very highly on IQ tests, but I've worked with a great many people who I would guess do not score more than slightly above average but nevertheless bring a lot to the table that I cannot.

I guess my point is that using IQ as an authoritative measure of "intelligence" is missing the forest for the trees (well I suppose to best fit the metaphor it would be 'tree').