Well lifetimes of shaking is not practical is it. Marbles in a jar are not arranged in a neat spacial grid, but in all kinds of configurations. The chance of

Well lifetimes of shaking is not practical is it. Marbles in a jar are not arranged in a neat spacial grid, but in all kinds of configurations. The chance of recovering any near perfect starting symmetry, depending on the size of a jar, might take decades or millions, or more years. In the meantime, all that energy being used to shake the jar is generating huge amounts of heat entropy.