Friday night's bruise cruise highlights need for game to flow

The roof didn't work. The symbol of the search for a brighter rugby, the very piece of kit that guarantees a patch of dry in a decidedly wet part of the world, seized up. It was the Six Nations all over - good intentions stuck. It didn't matter that the sky overhead was clear on Friday night and that there was no real need for the mechanical aid in the first place; the Wales and France coaches wanted to guarantee conditions to match their ambitions . . . and something broke down.