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I.INTRODUCTION
E.   Metaphors of science
§But the metaphor breaks down:
§Reality is never so honest about telling when you are on the wrong track.
§Wrong explanations are held on to for years before being rejected.
§Reality is never so direct about giving you answers to your questions.
§Two competent researchers can disagree about evidential support for a theory
§Reality is never so specific about whether or not you are right or wrong.
§No theory is ever completely confirmed by evidence.