"Synchronise watches... I make it 12:23:57... NOW!!" "Sorry sir, I make it only 12:23:56.999999999999999999999999999999999999"
When we all have our personal atomic clocks, who sets the standard?
Hey, why not have a cluster of master clocks that we could all synchronise our pocket atomic clocks to..
And even better/easier/cheaper, we could do away with having our own portable atomic clocks and just synchronise all our devices to it, just like, erm...