Nix v. Hedden the respondent and found that the tomato should be classified under the customs regulations as a vegetable, based on the ways in which it is used, and the popular perception to this end. Justice Horace Gray, writing the opinion for the Court, stated that: Justice Gray, citing several Supreme Court cases ("Brown v. Piper," 91 U.S. 37, 42, and "Jones v. U.S.," 137 U.S. 202, 216) stated that when words have acquired no special meaning in trade or commerce, the ordinary meaning must be used by the court. In this case dictionaries cannot be admitted as evidence, but only as
A priori and a posteriori negation is not self-contradictory (thus, it is said that it is "not" true in every possible world). As Jason Baehr states, it seems plausible that all necessary propositions are known "a priori", because "[s]ense experience can tell us only about the actual world and hence about what is the case; it can say nothing about what must or must not be the case." Following Kant, some philosophers have considered the relationship between aprioricity, analyticity, and necessity to be extremely close. According to Jerry Fodor, "Positivism, in particular, took it for granted that "a priori" truths must be necessary..." However, since