I'm a bit sceptical that we could discover unsuspected geniuses with IQ tests, but I will concede that it could be useful the other way around: to prove to some

I'm a bit sceptical that we could discover unsuspected geniuses with IQ tests, but I will concede that it could be useful the other way around: to prove to someone, most liekely ourselve, that one is not often as clever as one believe. :-)