In the 1920's, Buster Keaton made some of the most brilliant, innovative comedy movies anyone ever made. Then there was a crash and he made a lot of movies that were nowhere near as good and his career — and in some ways, his life — just went down, down, down for the rest of his life.
Film scholars debate just wha' happened. There's general agreement that he was harmed by — in no particular order — the coming of sound, the loss of control over his career and films, his marriage and personal life, changing tastes in film, alcohol and a few other factors. There is not general agreement as to which did him the most damage, how much of that damage was self-inflicted and how much of it was preventable. Here's a short video that offers some views of the downfall of one of the movie industry's greatest talents…