Back to the drawing board
What's the meaning of the phrase 'Back to the drawing board'?
Start again on a new design or plan after the failure of an earlier attempt.
What's the origin of the phrase 'Back to the drawing board'?

"Grid injuries for the season now closing suggest anew that nature get back to the drawing board, as the human knee is not only nothing to look at but also a piece of bum engineering."
It was well-enough known by 1966 for it to be used as a title for an episode in the 'Get Smart' TV series, and has also been used as the title of several books.
A drawing board is, of course, an architect's or draughtsman's table, used for the preparation of designs or blueprints.
The phrase originated as the caption to a cartoon produced by Peter Arno (Curtis Arnoux Peters, Jr.), for the New Yorker magazine, in 1941. The cartoon shows various military men and ground crew racing toward a crashed plane, and a designer, with a roll of plans under his arm, walking away saying, "Well, back to the old drawing board".
