Scotland’s new parliament building has been awash in controversy – almost all of it about the enormous cost. But this is missing the point, writes Duncan Macmillan. “We seem unable to lift our eyes from the cost of the building itself to see what we are getting for our money. But sheathed in scaffolding and polythene sheeting, our parliament is a chrysalis. In a month or two a marvellous butterfly is going to emerge to astonish us all. Or maybe not a butterfly. Really, it is a flower.”