On the quality of decision-making, rarely high at Westminster for domestic Scottish affairs, and of scrutiny of the ministerial executive will hang a verdict about the formal procedures. As at Westminster over centuries, so at Holyrood over a few years, practice will make its own rules. Power abhors a vacuum but also shuns an overcrowded arena. That is why there are already tensions between local government and the putative central authority. Education, the biggest spending function, is the most obvious focus.
Does a small country with 129 MSPs need 32 education authorities? Curiously, pro-devolutionists who say no are reviving the Conservatives' main objection to the parliament, that there will be too many layers of government. Councils will not surrender authority without a struggle, and power politics will not necessarily be conducted on the Queensberry rules of last week's agreement.