Not a history in order. A set of fixed moments, each showing the whole world at the same instant, measured against the same questions every time. The questions that have no answer yet stay on the page as a dash — because watching them stay empty for sixty screens and then detonate is the actual story.
One row per moment. One cell per through-line. Dark cells are metrics that do not exist yet — no cities, no writing, no countries, no internet. Scroll down and watch the dark dissolve. It happens far later, and far faster, than anyone's intuition says.