"I see," said the blind man

A humorously contradictory statement used to express either confusion over or understanding of something. Based on a pun of "see," meaning both to understand and to have physical sight. A: "It's quite simple, Dad. You just have to reformat the hard drive, so be sure to back up your computer to the cloud first." B: "Hmm, 'I see,' said the blind man." A: "Of course you shouldn't turn the beaters on until you put them in the bowl!" B: "'I see,' said the blind man. I think I have cake batter in my hair now." "I see," said the blind man. So that was the problem all along? I had the wrong screwdriver?