Knuth Versus Email

Donald Knuth

Prof. Donald Knuth

Many of us complaint about leading exceedingly busy lives. So busy are we that we have no time for solitude, yoga, meditation, or even our own wellness. But are we really busy? Or are we just slaves of routines that we have created around us. Is it necessary to lead these hyper-connected lives? Here is an example of somebody who has chosen a different path:

I have been a happy man ever since January 1, 1990, when I no longer had an email address. I’d used email since about 1975, and it seems to me that 15 years of email is plenty for one lifetime.

Email is a wonderful thing for people whose role in life is to be on top of things. But not for me; my role is to be on the bottom of things. What I do takes long hours of studying and uninterruptible concentration. I try to learn certain areas of computer science exhaustively; then I try to digest that knowledge into a form that is accessible to people who don’t have time for such study.

On the other hand, I need to communicate with thousands of people all over the world as I write my books. I also want to be responsive to the people who read those books and have questions or comments. My goal is to do this communication efficiently, in batch mode — like, one day every three months. So if you want to write to me about any topic, please use good ol’ snail mail and send a letter to the following address:

Prof. Donald E. Knuth
Computer Science Department
Gates Building 4B
Stanford University
Stanford, CA 94305-9045 USA.

I have a wonderful secretary who looks at the incoming mail and separates out anything that she knows I’ve been looking forward to seeing urgently. Everything else goes into a buffer storage area, which I empty periodically.

My secretary prints out all messages addressed to taocp@cs.stanford.edu or knuth-bug@cs.stanford.edu, so that I can reply with written comments when I have a chance. If I run across such a message that was misaddressed — I mean, if the message asks a question instead of reporting an error — I used to just throw the sheets in the wastebasket. But now I save them for scratch paper, so that I can print test material for The Art of Computer Programming on the blank sides.

You might also try faxing me at 650-725-4671. But be warned that I look at incoming fax mail last, perhaps only once every six months instead of three.

`I don’t even have an e-mail address. I have reached an age where my main purpose is not to receive messages.’ — Umberto Eco, quoted in the New Yorker

Sometimes I do send email, through my secretary, with respect to the project I’m currently working on, when I believe that the recipient won’t be bothered by my request. But I hope you can understand why I am almost always unhappy to receive unsolicited email myself. Thank you for your patience and cooperation as I try to finish The Art of Computer Programming (TAOCP), a work that I began in 1962 and that I will need many years to complete. In return, I promise not to send unwelcome email requests to you.

Credit: This has been writtne by Prof. Donald E. Knuth. You can find the original here.

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