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Why does a simple reflex agent fail in a partially observable environment?

  • A.It cannot learn from the mistakes it makes during operation
  • B.The current percept alone does not determine the correct action
  • C.It cannot execute actions quickly enough to keep up with events
  • D.It has no way of representing the goals it is trying to achieve

Answer: B

If two different states produce the same percept but require different actions, a rule keyed only on the percept must choose wrongly in one of them, and no set of such rules can help. Internal state carrying a memory of previous percepts is the remedy. Speed, goals and learning are separate limitations of the architecture. Recognising when an architecture is provably inadequate, rather than merely inefficient, saves a great deal of fruitless tuning.

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