【明報專訊】A rule book is supposed to serve as the arbiter of disputes which hopefully would vanish after parties' playing by the book. But what happens when there's a dispute on how to play by the book or even which book to play by? When witnessing Nicolás Maduro, the Venezuela president elected in a previous election in which opposition parties were largely banned, standing against Juan Guaidó, the interim President recently returned by the Venezuela National Assembly, we may be too dazzled to know which book to turn to. I mean whether it's a legal book or a political one.