One of the drawbacks to having an easy-to-use number list built into my phone, is that I have no idea what most of my friends' phone numbers are. The only numbers I still have memorized are really old ones that I've known for years, like my parents'. If I lose my phone, or if Microsoft Outlook crashes, it would be a catastrophe.

It is said that 7 digits is the practical limit for human number memorization. I wonder if our ability to memorize numbers will de-volve over time as we become more and more intertwined with technology.

I'm going to print out my address book now.