Let's say instead of 40 lbs of books they carry 2 tablets (3lbs). If I needed to look up a phone number and had a choice of a tablet or a paper phonebook, and

Let's say instead of 40 lbs of books they carry 2 tablets (3lbs). If I needed to look up a phone number and had a choice of a tablet or a paper phonebook, and the tablet crashed... I'd wait for the tablet to reboot and look it up on the tablet.