Edited sentence: Clearly, more can be done than already has been done.De Sade described even more gruesome images in 120 Days of Sodom, the book on which Salo is based: perhaps a truly fiendish director with a roomful of up-to-date computers—costing less than $1 million total—could realize de Sade's worst visions without actually torturing a person to death in front of a camera.Mainstream movies containing CGI and other realistic special effects show that if a director can imagine something in sufficient detail, combined with sufficient resources, it can be put on a screen.Pasolini created some gruesome images in Salo, without using computers, but some of them are not really seen by the viewer.The recent Lord of the Rings films by director Peter Jackson show what is technically possible in filmmaking; this level of technology has yet to be applied to pornography