 In the case of "People v. Freeman", the California Supreme Court ruled to distinguish prostitution as an individual taking part in sexual activities in exchange for money versus an individual who is portraying a sexual act on-screen as part of their acting performance.The case was not appealed to the U.S. Supreme Court, thus it is only binding in the state of California.Among the oldest surviving examples of erotic depictions are Paleolithic cave paintings and carvings.