“The word ‘relevant’ means that any two facts to which it is applied are so related to each other that according to the common course of events one either taken by itself or in connection with other facts proves or renders probable the past, present, or future existence or non-existence of the other.” James Fitzjames Stephen, A Digest of the Law of Evidence 2 (4th ed. 1881).
relevant
relevant, adj. Logically connected and tending to prove or disprove a matter in issue; having appreciable probative value — that is, rationally tending to persuade people of the probability or possibility of some alleged fact. Cf. MATERIAL(2), (3). [Cases: Criminal Law 338; Evidence 99. C.J.S. Criminal Law §§ 710, 730; Evidence§§ 2–5, 197–199, 204, 206.]