Two timelines connected by a data link that lets a future London interfere with a rural American present it has already lost.
The jackpot is the idea that sticks. Not one catastrophe but a slow multi-decade compound of climate, pandemic and collapse that kills most of the population without any single event to point at. That framing has aged uncomfortably well since I read it in February 2020.
It is the hardest of his books to follow for the first hundred pages and worth the climb.
