Wish I'd said that - April 24, 2017
"Sometimes even in the middle of doing something, we must think in reverse, as when C.S. Lewis suggests the analogy of a math sum gone awry: until you go back to the place where the mistake was made, no further amount of ciphering will help." Robert Moore-Jumonville in Gilbert Magazine Vol. 7 #8 (Issue 57, July-August 2004)