[jakefromstatecs]

> If they're easily solvable then why do you need planning?

Easily solvable problems still need coordination. Do you want to go to one store and have your change rounded up then go to another and have it rounded down?

[wat10000]

Sure, who cares? This could already be happening today with rounding fractional pennies. I have no clue if stores round up, or down, or split at .5, or what. But obviously they're doing something, since there aren't physical fractional pennies and my card statements never show more than two decimal digits, so it's not a new problem. This would make the problem five times worse, but five times insignificant is still not something I'm going to worry about.