As I got into a Brighton taxi this morning, my driver’s first words were ‘apparently it’ll clear in a couple of hours’. I gathered — of course — that he was talking about the morning mist. ‘It’s almost gone already up in town.’ A conversation about weather prospects is hardly uncommon in British taxis, and we launched into this one with no preamble at all (he hadn’t said hello), as though invisibly picking up the thread of a conversation already in progress, a perpetual, life-long discussion about whether it’ll rain tomorrow filling in as the default whenever nothing else is...