beg the question, to

To assume that the very matter being questioned is true. A point of logic originally raised by Aristotle, it became a Latin proverb, Petitio principii, meaning “to beg the main point” (or “assume with- out proof ”). It was most clearly defined by Thomas Reid (Aristotle’s Logic, 1788): “Begging the question is when the thing to be proved is assumed in the premises.” Since about 1990, however, it has sometimes been used differently, to mean avoiding a straight answer, as “Using a round table begs the question of who is paired with whom.” An even more recent usage is as a synonym of “to raise the question,” as in “King’s new e-book begs the question of what constitutes a book.” Because of these confusions of mean- ing, this cliché is best avoided in clear discourse or writing.