This was a marketing decision made by author Rowling and Scholastic, the publishing house that released the novel in the United States. The decision to change Philosopher to Sorcerer was made because, in the U.S., a philosopher connotes a scholar of philosophy, ethics, metaphysics, logic, and other related fields. Philosopher does not typically connote an alchemist or magician, and magic is essential to the Harry Potter books. Consequently, the publisher suggested using another word with a more magical connotation, and Rowling suggested Sorcerer. Rowling gives this explanation: "Arthur Levine, my American editor, and I decided that words should be altered only where we felt they would be incomprehensible, even in context, to an American reader... The title change was Arthur's idea initially, because he felt that the British title gave a misleading idea of the subject matter. In England, we discussed several alternative titles and Sorcerer's Stone was my idea."
The books should be required reading for anyone playing a role, imo.
