It seems that it's mostly written by their sons. People who weren't there but interpret the present based on their glorious present and the average depth of his

It seems that it's mostly written by their sons. People who weren't there but interpret the present based on their glorious present and the average depth of historical inquiry will not be very high. It's mostly appraisal of the current status-quo. for instance, people will talk about computing today with react/javascript/facebook/google.. maybe good old microsoft/apple. But almost nobody will go deeper and read about backus team in the first FORTRAN compiler and his later years around FP influencing the 70s/80s functional school of thought that led to rust, ES6, react and the likes.