Addition? The act of taking two (or more) sums and counting all the individual parts to get a sum total.
Discussion
Adding your current age plus birth year adds up to the current year that's the quirk here.... Hmm
That literally happens every year after your birthday. It's called counting by ones.
And in epoch changes when calendars are reset?
Like a mass consensus event where people recognize a phase shift....and declare a new calendar?
