Goodnight ticking Doomsday Clock.”Eighty-two years ago, my grandfather George Strasser began his career as a nuclear weapons scientist enriching uranium for the first atomic bomb. In the Doomsday Clock, I found a shorthand to communicate the imminent and increasing existential threat of nuclear weapons. How do the clock setters distill horror and uncertainty into a time on a metaphorical clock? It’s our responsibility to take care of ourselves.”Despite his commitment to the metaphorical clock, Holz craves quantifiability and enjoys a hard math problem. He believes that the erosion of shared reality is a greater danger than putting AI in control of nuclear weapons.