I love pizza. Unfortunately I can never remember the phone number for pizza delivery and I'm not smart enough to write it down. So I have to call information for the number. To make sure I don't forget the number from the time the operator tells me to the time I dial it, I engage in rehearsal -- consciously repeating the information over and over so that I can keep it in temporary memory. Rehearsal can also be used to encode it for long-term memory storage, but I can't seem to get it in there and so I have to call the operator every time.