## Question 8.2

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• Question 8.2 asks Consider a knowledge base containing just two sentences: P(a) and P (b). Does this knowledge base entail For All x P(x)? Explain in terms of
Message 1 of 1 , Nov 13, 2003
"Consider a knowledge base containing just two sentences: P(a) and P
(b). Does this knowledge base entail For All x P(x)? Explain in terms
of models"

The answer, as noted the the authors answer sheets is No, the KB does
not entail this.

If the knowledge base only has those two facts, then that is the
agents universe. That is all it knows. So I would like to argue that
For All x P(x) is true. If the KB contained other facts, then this
might not be true.

If the agent in Wumpus world knew of two squares (only two squares,
no knowledge that any other squares exists) and each square had a pit
in it, can we not say that For every square in the Agents Wumpus
world, that sqaure has a pit?

Isn't each agents universe different? All kings are persons is true
in our universe, but certainly not in EVERY universe.