I was astonished that my daughter didn't know the phone numbers of many of our closest family members. I wrote them all down on a card that fits in her wallet and insisted she carry it at all time

I only know my son's because the final number is one higher than mine.

I don't know, I can't remember how to do it

I know my number only. I keep a couple backup numbers separately for emergency purposes.

If I lose my phone, without access to another computer, I'm LOST!! My Google account does have the numbers, however, that means I have to have access to a computer that I trust. 3 years ago I worked on Thanksgiving day. It was snowing, roads were crappy. My first break, my phone hit the tile floor and was done in. So, IF I had troubles on the way home I had no way of calling for help. Scary stuff. Luckly we survived the day and I went shopping on Black Friday for a new phone. Usually I will not go shopping then, but...

My phone is smart so I no longer need to be!

Back ups anyone? ( Old fashion notebook, excel file in a USB thumbdrive, burn a CD, multiple copies in all PCs in the house...... Plenty of options however none of them happens by itself )

Your phone will turn up.

I keep all contacts backed up on my computer, save them to a flash drive and also periodically print out a hard copy of them.

well, not unless you watch it dial.

g