Agency & Plot?

According to gamasutra, Ron Gilbert says during the Storytelling in Games Today' panel at this year's Penny Arcade Expo:
"I’d worry a lot about AI developing the plot. I think good story is about the human experience, and computers don’t have any of that. I think what’s interesting about story is putting the human experience into it. I think you need that human feedback loop in there to make it important."
But isn't it true that a human developed the agency, the rules, the mechanism for the feedback loop, and therefore the human experience is implicit in an agency driven plot scenario like The Sims? And isn't it true that human feedback is also implicit in that the human player can override motivations, situation, and behavior?

Content by Nick Porcino (c) 1990-2011