His character, an astronaut named Watney, might be intended as a slightly futuristic Robinson Crusoe, marooned on the red planet with no resources other than a well-stocked operating base, a scientific education, and the support of Mission Control in Houston; but considering the man’s pluckiness, and the movie’s amusement in seeing him patch things together, the better comparison might be with Buster Keaton, when he was lost at sea in The Navigator .