some mental confusion. Lexicographers state that it is an error due to stupidity and carelessness, but blunders are often caused<p 1> <p 2>by a too great sharpness and quickness. Sometimes a blunder is no mistake at all, as when a man blunders on the right explanation; thus he arrives at the right goal, but by an unorthodox road. Sir Roger L'Estrange says that ``it is one thing to forget a matter of fact, and another to blunder upon the reason of it.''
Some years ago there was an article in the Saturday Review on ``the knowledge necessary to make a blunder,'' and this title gives the clue to what a blunder really is. It is caused by a confusion of two or more things, and unless something is known of these things a blunder cannot be made. A perfectly ignorant man has not sufficient knowledge to make a blunder.
An ordinary blunder may die, and do no great harm, but a literary blunder often has an extraordinary life. Of literary blunders probably the philological are