Your jar is a stock — how many coins you have right now. The taps are flows — coins moving in from chores and out for treats, week after week.
The jar only fills when what comes in beats what goes out. Spend just a little more than you earn, every week, and even a full jar slowly empties.
The save-first scoop keeps a few coins safe before you're allowed to spend them. A small, steady scoop climbs to the goal more surely than waiting on one big surprise — birthday money is lovely, but you can't plan a whole year around it.
Grown-ups call this a budget. It is really just watching your jar, and choosing your taps.
Something in the simulation stopped unexpectedly — the lesson continues without it. You can move on; nothing you did was wrong.