My personal experience from myself and everyone I've seen, is that there are very few true geniuses (much less than 20% of the population), and that the major d

My personal experience from myself and everyone I've seen, is that there are very few true geniuses (much less than 20% of the population), and that the major differentiators are luck and effort. You're lucky to be born into a family that turns you on to reading and learning, or even to be born in a country where you have the freedom and equality of opportunity to try for your dreams. But you also make your own luck, in that those who put in the effort make things happen. I don't know any really smart or accomplished people who would say that it was just their intellectual superiority that got them to where they are. Rather, they are usually eager to cite luck first, and in reality it was their effort that got them places. Myself, I know I'm lucky as hell, but I do put in a lot of effort too, not just in my chosen field but also reading everything I can. My hope is the effort in combination with a little luck will pay off big :) This guy has some interesting points, and there is a degree of truth in it, but he's way too absolute in citing a single determinant factor of success, and his idea of additional systemized testing is ridiculous. There are differences in intelligence levels, but through effort they even out in practice in most cases. And as if his tests could ever be completely without bias, or even perfected enough to accurately determine true intelligence vs acquired knowledge.