_ Source: _Volume 8, Issue 3, pp 231 - 244 Here I cast some doubt on Professor Coliva’s interpretive claim that Moore’s “Proof of an external world” is addressed to idealism, not skepticism, and explore the consequences for our understanding of the final paragraphs of the paper. In response to Professor Leite, I examine the disagreement between us on whether the global skeptical hypotheses can be refuted by ordinary evidence. Finally, after analyzing the logic of the skeptical argumentation, I attempt (...) an answer to Professor Stroud’s question about the staying power of the representative theory of perception. (shrink)