To build: CuriosityThread, a site that shows the chain of questions/interests a person asked/followed to gain the knowledge they have. Perhaps to partially populate this site, Wikipedia could track threads of browsing, and scrolling. Subsequently, tutorials (even a textbook!) customized to the curiosity profiles of different people could be made of it? (Relatedly, creating a web database of the series of questions bright students ask could be extremely powerful. I would love, for instance, to have documentation of the series of questions one of my friends asked over the course of his life to ultimately gain the knowledge to get gold at the International Chemistry Olympiad. Maybe you could get data from everybody and look specifically at how the ultrasuccessful differ?)