A splendid point, my wonderful boy, a most splendid remark, you have analysed our conundrum exceedingly well, because--

[ To every pot there is a lid, and the Duchess covers her pot with a heavier book. Then she turns towards the camera with a cheerful smile. ]

Because knowledge is powder, and powder has no place in this recipe, and so, as they say, less is more. Especially powder.