(READING) This is Hal Foster: He was born and raised in Seattle. In the early '80s, he and two friends founded the most significant independent press in our city's history, Bay Press. Also in the early '80s, he edited the book that launched the postmodern debate in the U.S., The Anti-Aesthetic: Essays on Postmodern Culture. He edits the excellent arts journal October, teaches at Princeton, and is here tonight with his recent books Art Since 1900: Modernism, Antimodernism, Postmodernism and Prosthetic Gods. (Elliott Bay Book Company, 101 S Main St, 624-6600. 8 pm, free.)