Do you know your best friends phone number.....

I realized today that I do not know very many phone numbers by heart anymore.  I can remember my grandmothers number from when I was five years old but I do not remember my best friends number right now.  With the ease of new technology we no longer "need" to memorize numbers. Why would I need to know a number by heart when all I have to do is push a couple buttons on my phone?  BUT what if you lose all those stored numbers? Or (like a patient I had today) you end up in the hospital and your phone is nowhere to be found? Would you be racking your brain trying to remember a number you never tried to memorize in the first place? My challenge to you today is to take it back old school and put those important phone numbers back in the best phone book ever...your own brain!