Scientific priority
Credit for first discovery
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Priority disputes
Priority becomes a difficult issue in the context of priority disputes, in which scientists question who was the first to propose a given theory, make a discovery, or arrive at a particular understanding. Historians of science are generally skeptical of attempts to settle such disputes retrospectively, arguing that these disputes often lack understanding about the nature of scientific change and tend to involve gross misreadings of historical evidence in order to support claims that someone had been overlooked as the original discoverer. Historian and biologist Stephen Jay Gould once remarked that “debates about the priority of ideas are usually among the most misdirected in the history of science.”
Richard Feynman told Freeman Dyson that he avoided priority disputes by “Always giv[ing] the bastards more credit than they deserve.” Dyson remarked that he also follows this rule, and that this practice is “remarkably effective for avoiding quarrels and making friends.”
The Leibniz–Newton calculus controversy was a high-profile priority dispute in the 17th century. The discoveries of Neptune and Haumea were subject to priority disputes, as were the discoveries of Oxygen and several other chemical elements. Priority disputes for the invention of the telephone and the invention of radio both lead to patent disputes.

