If he does not understand that, he really should go back to the drawing board.
Is one wrong in suspecting that there really is a case now for going back to the drawing board and producing something properly?
It was a case of "back to the drawing board" with a vengeance.
I therefore suggest that she should go back to the drawing board.
We have to go back to the drawing board and ask ourselves what our priorities are.
I agree that there should be a complete rethink: we should go back to the drawing board and reconsider the trust option.
If there is to be consensus, we must go back to the drawing board.
I agree with him about the need to go back to the drawing board.
