One of the most dramatic techniques for constructing accounts of "undiscovery" or incompetence in science involves the manipulative deception—in some accounts, the "hoaxing"—of the putatively incompetent researcher, ostensibly as an experiment to evaluate his or her methodology and the soundness of his or her knowledge claims. In this article, the author examines five cases in which such deceptions have been employed, noting the patterns of argument that typically follow these deceptions and the factors that seem to determine the power of (...) these arguments. The author suggests that the "hoaxer" in such cases is most likely to be successful when his or her views about the targeted researcher's methodology and knowledge claims are orthodox with respect to his or her intended audience. (shrink)