Learn your phone numbers!!!

Recently sprint gave me a replacement phone and they couldn't copy my numbers over..  At first I was outraged, the thought of having to reprogram all of those numbers into my new phone seemed like an insurmountable task.  I don't have a nice phone, so don't even ask about why I don't sync it with my computer...  But here's the deal, when I was in high school, I knew EVERYone's number.  Old friends, new friends, ALL of my friends, numbers.  By heart.  After getting my numbers taken from me, I realized that I didn't know some of my closest friends' phone numbers.  So I decided to learn them...  all of them.  Sure I have my address book on my mac, to refer back to, but I have learned most of my friends' phone numbers.  The only number I have in my phone is my wife's, and that's just in case something ever happened to me who ever had found my phone would know who to call.  I suggest everyone do this.  It's a good exercise in memory.