Also secondly, how do we even define intelligence? Being able to process and learn information quickly? Being able to store lots of information? Or does every person possess the ability for different intelligences, mental disorders aside?

I think intelligence is an abstract concept that is blurred and takes on different forms because everyone has a slightly different version of what intelligence means, but that there is a loose general consensus on what it can be.

Thinking of intelligence as a dam on a lake... hmm... So if we can figure out how to chip away at this mental blockage (assuming there is such a thing) we could write a manifesto that will never be applied in real life but will be interesting to read.