In some cases, the editors of the guide take issue with the panel. For instance, the guide observes that the original meaning of "disinterested" was "not interested" -- before the word developed its now preferred sense of "unbiased." "Despite this history, the 'not interested' usage has never had many fans on the usage panel," the guide says. In four surveys over 35 years, nearly 90 percent of the panel has disapproved of the older sense of "disinterested" every time. And so, while using "disinterested" to mean "not interested" is historically justified, the guide warns that this is "likely to be viewed as a sign of ignorance of the traditional use of the word."