Inevitably the advancement of knowledgeable information generation will have same mental effect as having a contact list on your phone. When I was a kid I knew

Inevitably the advancement of knowledgeable information generation will have same mental effect as having a contact list on your phone. When I was a kid I knew at least 5 peoples phone numbers maybe more. Even now I can recall 2 of them. How many can you recall from your actual contact list?