Learning Learning is essential for unknown environments, i.e.,when designer lacks omniscience Learning is useful as a system construction method, i.e.,expose the agent to reality rather than trying to write it down Learning modifies the agent's decision mechanisms to improve performance Chapter 18,Sections 1-3 3 Learning Learning is essential for unknown environments, i.e., when designer lacks omniscience Learning is useful as a system construction method, i.e., expose the agent to reality rather than trying to write it down Learning modifies the agent’s decision mechanisms to improve performance Chapter 18, Sections 1–3 3