``Where are the centers of rods 1 and 2 and 3 and ... ?''

we can ask several different questions:

- ``Where is the center of rod 1?''
- ``Where is the center of rod 2?''
- ``Where is the center of rod 3?''
- ...

Each of these new questions is simpler than the original because each asks about only one rod. This means that we can solve the entire stacking problem by considering just one rod at a time-assuming that we can answer the simpler questions.

Hamlet Project

Department of Computer Science

University of Utah