system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: If I shake Honey Bunches of Oats, will it unmix over time?

Objects usually separate by density.
But eventually, entropy is supposed to make everything tend to disorder.

And why does all the sugar and crumbs always collect at the bottom?
gpt
because of particle size.  the sugar and crumbs are the smallest particles.  and in an upright bag, they will settle to the bottom during agitation.  separating by density is true for liquids/gasses that do not emulsify at equilibrium, like oil and water.  air/hydrogen.  it is not true for solids.  because if i put lead on top of wood.  the lead isn't going to go to the bottom less the wood breaks or otherwise deteriorates.