Claim: Ridley Scott is not the director of the film Alien.
Evidence: Following his commercial breakthrough with the science-fiction horror film Alien -LRB- 1979 -RRB- , his best known works are the neo-noir dystopian science fiction film Blade Runner -LRB- 1982 -RRB- , crime drama Thelma & Louise -LRB- 1991 -RRB- , historical drama and Best Picture Oscar winner Gladiator -LRB- 2000 -RRB- , war film Black Hawk Down -LRB- 2001 -RRB- , crime thriller Hannibal -LRB- 2001 -RRB- , biographical film American Gangster -LRB- 2007 -RRB- , and science fiction films Prometheus -LRB- 2012 -RRB- and The Martian -LRB- 2015 -RRB-.