The essays on Gamasutra routinely disappoint me. This one starts off with an interesting perspective on the continuum between the game designer’s narrative and the one the player creates, but then promptly falls into the trap of assuming that player agency is only good for navigating within the designer’s narrative. Argh.
http://www.gamasutra.com/view/feature/6276/closing_the_loop_fostering_.php?print=1