There  are a modest number of people with lets say, around 114 IQ, who grew up with one book in their homes which they never read. And whose working class parents actually  ignored them  to the point of neglect . They nonetheless became college professors who wrote at least one well received book,  apparently because they graduated from the free City College of New York:)... I know two such people.,(reply>), you can have AI write a book for you these days, I suspect a lot of the contemporary people we're surprised were able to crank out a book, used this or someone used it for them...