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How do we know that there is a physical world outside of ourselves?
1.Explain some ways that the brain plays an active role in perception. See pp. 134-135.
2.Explain the commonsense view of perception. See pp. 137-138.
3.Explain why James Rachels and Stuart Rachels conclude with the sentence: “We have found no reason at all to believe that we’re not living in the Matrix” (p. 138).
4.Briefly explain why you agree or disagree with their conclusion.