In the previous handout on Production systems, I introduced the general idea of a production system, and then demonstrated one particular type of production system - one functional architecture of bug cognition - applied to two bugs. In some ways, the demonstration was a bit of a cheat. I introduced production systems as working mainly on symbols in a short-term memory, but the two bugs didn't use STM at all. They worked entirely on perceptual predicates and actions, and their STMs remained empty throughout. In this handout, I'll remedy that, with some bugs that think a bit before reacting.