What can we hope to accomplish when we lecture to students? If we expect no more than to communicate information, then B. F. Skinner and others were right: the lecture method should have disappeared with the invention of the printing press. Students can read faster than we can talk. We can assure accuracy and thoroughness and save time by saying it once on paper. Students can review the printed page with considerable confidence that it will be more accurate than their notes. Word processors allow us to make constant changes, to keep "the lecture" on the "cutting edge" of advancing knowledge (once the standard defense for offering lectures).
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