It is, however, important for the helmet to fit well so that it staysinplace during a fall, and the polystyrene layer can only be compressed once so helmets should be replaced after an accident.
But the principle stays the same: keep non-decisions in their proper place, and cherish and nurture my creative energy, spending it only on things that matter.
To ensure that his precious reform package stays on course, Mr Hashimoto has been adamant about keeping a number of key ministers and officials inplace.