I was the executive editor on a little magazine called Greek Accent, whose only claim to fame is that its art director went on to be the art director of Discover for many years.
Once I'd reached the point where I could squirrel away more than 30 digits a minute in memory palaces, I still only sporadically used the techniques to memorize the phone numbers of people I actually wanted to call. I found it was just too simple to punch them into my cell phone.

