Kaelbling compares this approach to the intuitive strategies humans use for complex activities. She cites flying from Boston to San Francisco as an example: You need an in-depth plan for arriving at Logan Airport on time, and perhaps you have some idea of how you will check in and board the plane. But you don’t bother to plan your path through the terminal once you arrive in San Francisco, because you probably don’t have advance knowledge of what the terminal looks like — and even if you did, the locations of obstacles such as people or baggage are bound to change in the meantime. Therefore, it would be better — necessary, even — to wait for more information.