whatA box of grains, one big nut buried at the bottom, and a shake you control. Each shake tosses grains up into voids and lets everything fall again. Nobody pushes the nut anywhere.

whyThe claim is the muesli mystery: shaking makes the BIG one rise. The mechanism is an asymmetry you can state in one sentence -- a small grain needs a one-cell void to fall into, and those are everywhere; the nut can only sink when most of its wide floor vanishes at once, and in a settled bed that almost never happens. So every shake ratchets it upward. The rate map measures rows-per-hundred-shakes at every amplitude you try: too soft and nothing moves, too hard and the fluidised bed re-mixes -- the surfaced nut gets swallowed again. The sweet spot is found by measurement, printed in the HUD.

howA lattice bed: the toss phase hops grains up or sideways with probability set by the amplitude, the nut is thrown in proportion to how much floor is under it, grains flowing around it as it climbs; settling drops grains straight or diagonally, and the nut sinks only when fewer than three of its seven floor cells remain. Click re-buries the nut; the automatic story cycles soft, sweet, and violent shaking, burying afresh each time so the comparison is fair.