Is that a reference to something? I'm imagining Hofstadter telling fans to call a number at random, and ask the person who answers to call another number at ra

Is that a reference to something? I'm imagining Hofstadter telling fans to call a number at random, and ask the person who answers to call another number at random and repeat the request to whoever answers, with the end result being that Hofstadter's phone would ring and you could talk to him. That sounds like something he'd do, but I can't find a mention of it on Google.