I’ve done this math many times. My grandfather on my father’s side was born in 1906. He was 35 when my father was born in 1941. My father was 38 when I enter

I’ve done this math many times. My grandfather on my father’s side was born in 1906. He was 35 when my father was born in 1941. My father was 38 when I entered this world in 1979. I was 41 in 2020 when my son was born. Fortunately we were able to have some semblance of an 80th birthday for his grandfather last year in the midst of this pandemic. If my son has a child as late in life as I have, there’s no telling if I’ll get to meet them, simply because of life expectancy.