“A man with one watch always knows what time it is. A man with two watches is never sure.”

That's why you need three watches.

Oh man. My mother's house has so many clocks with a variety of opinions on what the time is. I have to average them to get an estimate of what the real time is.

Every man now has access to a swarm of atomic clocks in Earth orbit and the necessary relativistic corrections to know time anywhere on earth, down to a few nanoseconds.

Tell that to my microwave, my oven, the clock in my car, my watch, the clock on the wall…