Back in the day, when we knew less than what we thought we knew, if you just wanted to learn about a subject, or because the homework assignment is due on Friday!, there were textbooks, local libraries, or the Encyclopedia Britannica your parents bought for you.

There is an ongoing debate about when you reach old age. Is it 50 when you receive your first invitation to join AARP? Is it 65 when you are eligible for Medicare? Or are you not  old until your children reach Medicare? And then there is the quote attributed to Bernard Baruch: “To me, old age is always 10 years older than I am.”