When John F. Kennedy was inaugurated the TV commentators said the white haired Cardinal Cushing was able to live long enough to see a Catholic Irishman as President. A few years later (1963 and 1968) both young Kennedys were dead and the Cardinal was still alive for their funerals and late.
You can never figure the future for anyone.
and later (not late)
In 1995, the man died at the age of 77, having paid out more than $180,000 for the apartment; the 120 year-old woman was still alive.
When I was in college studying engineering in 1976, several of us freshman engineers started a dead pool for Dr. Stephen Hawking. We thought he was going to pass away within months. I believe more of my fellow students who were in on that bet ended up passing away before Dr. Hawking did.