Most intelligent laymen regard the jargon of lawyers as an obvious trade trick, a professional pig-Latin calculated to obscure otherwise simple matters and impress clients with the indispensability of their services. Fortunately, most of their pompous verbal mumbo-jumbo is harmless tautology. But at least one legal usage "and/or"is dangerous nonsense.
Many a suit at law has hinged on the interpretation of an "and/or." Usually the decision has gone against the drafter who slipped that literary whatnot into his contract. An early instance is a case decided in a British court on Feb. 8,...