Pittsburgh Concrete Quotes

Many scientists espouse values or goals that, under critical challenge, they cannot characterize in a succinct and cogent way. They may be imprecise, ambiguous, or both. Such familiarly cited cognitive goals as simplicity and elegance often have this weakness, because most advocates of these goals can offer no coherent definition or characterization of them; indeed, it is probably not too wide of the mark to suggest that a major reason that most scientists purport to subscribe to the value of simplicity is why relatively few of them have anything very specific in mind. The imprecision of the concept allows for multiple interpretations; and in that fluid environment, almost everyone can devise a gloss on "simple" or "elegant" which he can find congenial. It should be clear why them charge of semantic utopianism, when warranted by the merits of the case, is a serious criticism of a goal, cognitive or otherwise. If someone purports to subscribe to an aim, but can neither describe it in the abstract nor identify it in concrete examples, there is no objective way to ascertain when that aim has been realized and when it has not. Values of that sort are too arbitrary to deserve any place in a rational activity.