Clever in some ways - not so clever in others

If ever asked if I think I am intelligent, I reply "In some ways and at some things yes, but in other ways and other things I am not intelligent". I think that applies to nearly all of the population as well. The more I find out the less I know. Just that the education system writes so many people off or undiscovers talents. It almost makes me think that if the education system did work, there wouldn't be such things as learning disabilties.