The navigation is our property RENE: Tell me what we have. Of value. GAEL: Whatever we've bought in cargo so far. I don't know what you want me— RENE: Anyone can buy goods. What do we really have? What do we sell? GAEL (realizing): The route. RENE: Yes. The navigation is our property. To copy a man's route is to steal it. Shane Carruth, The Modern Ocean Into the system of flight navigationownership
What's wrong with the rational model We Don’t Really Know the Goal When We Start We Usually Don’t Know the Decision Tree – We Discover It as We Go The Nodes Are Really Not Design Decisions, but Tentative Complete Designs The Goodness Function Cannot be Evaluated Incrementally The Desiderata and Their Weightings Keep Changing The Constraints Keep Changing Frederick P. Brooks, Jr., What's Wrong With This Model? Changing constraintsDeciding what to designThe situation talks back