The power of a new government stems not from its ideas but its enthusiasm. Labour, which took power on July 5th, kicked off with a flurry of green measures approved with the simple squiggle of a minister’s pen. Three giant solar farms were nodded through. A ban on onshore wind farms was removed by ministerial diktat. Or as Sir Keir Starmer, the prime minister, put it in peculiarly teenage syntax: “It was just, like, ‘delete’.”