Talkfests are rarely inspiring but the G7 summit last weekend was the final straw. Irritating, unmasked leaders tottered around the Cornish coast like characters at the Red Queen’s croquet party in Alice in Wonderland. Like the Red Queen, they expected us to believe as many as six impossible things before breakfast; that the seas are rising dangerously,  that the planet has a busted thermostat, that Covid is a threat to the young and the healthy, that it is necessary to remain under house arrest for years at time.