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I argue that both careful conceptual analysis and recent results from mathematical biology cast doubt on the utility of predictive fitness. In most cases, there is simply no sense to be made of the claim that predictive fitness predicts the future evolutionary trajectory of traits, organisms, or populations. If the very reason that we have retained the concept of fitness in evolutionary theory is to enable these kinds of predictions, this is a serious problem, and one which points to a fundamental misunderstanding in our philosophical analyses of fitness. We have privileged a role for fitness that it in fact is unable to play. Whatever else fitness may be, it is not (or at least is not very) predictive.