Setting the record straight, even though the lie has already circumnavigated the world.
Putting the information into practice.
It depends on what the next calculation is.
Keeping two sets of books that eventually become one.
Room for future optimization.
Some sort of sales event, probably.
It's all in the point of view.
The same way you do it in C, which also doesn't have a carry.
Sometimes you know where it happened. Sometimes you don't.
Putting together some things we've learned.
