Watching the Dune and Children of Dune mini-series from the early 2000s, I was struck how much films have changed in the years since. There are almost no black or brown skinned actors, certainly none in leading roles. In Frank Herbert's book, the leading Atreides family are said to have olive-brown skin, but on screen they are all very white. A few years of film history seems to have done more for human diversity or fusion of the gene pool than ten thousand years in the Dune films. Of course there were always some films and TV series, like Star Trek, that did diversity better, but nowadays I'm not sure it would even be possible to do a film in this genre that is so blatantly white.