> The article covers this as well: the author claims that studies show that all of those different intelligences correlate, so it is not very useful to categorise them individually.

I would strongly doubt that they correlate tbh.. where would the "virgin math genius" cliché would come from ?

I have been versed into various socio evonomic and hobby environement over my life, and have met natural geniuses in several unrelated fields (sport, math, chess, boxing, military, art, entrepreneurs /investors, emotional connections and / or sex). I can assure you i didnt not observe such correlation.

At best what ive noticed is how some of them would be clueless about their gift, and pretty average on the rest.

> all of those different intelligences correlate, so it is not very useful to categorise them individually

Maybe it's not useful for the sake of discussion to list them individually, but it's definitely useful to measure them individually. Or you'll mistake someone who's a master of rotating abstract shapes in their head for someone who manage to get things done in a complex environments. The full-scale IQ tests (WAIS?) do actually test many different manifestations of intelligence.

This is a bit on the side of the point, but it's an important distinction when you're discussing and trying to measure people's real-life abilities.