Daedalus woz ere

Had a lecture in a corner of the uni I'd never laid eyes on before, proving that the joint can still surprise me. Did some study in the sunshine, soaking up Vitamin D along with the textbook learnin', then perused one of the college rags. It contained the following tip: "If you think someone is giving you a fake number, read it back to them incorrectly. If they correct you, it's legit." Clever!