I have not seen a year in which so many risks—some truly existential—piled up so quickly. Each risk has its own, often unknown, probability of morphing into a destructive force. Groping for a metaphor—I love metaphors and similes—I feel like we’re in the final throes of a geopolitical Game of Tetris as financial and political authorities race to place the pieces correctly. But the acceleration is palpable. The proximate trigger for pain and ultimately a collapse can be small, as anyone who’s ever stepped barefoot on a Lego knows.