full initial prompt: “Create a striking data visualization using d3.js. It should be striking and fun for someone who’s on the list to interact with and experience. Fan out subagents for each part and /loop until it’s utterly perfect and compares with the best data viz experienc…↗

I gave Opus 5 a dataset of every certified running streak (including my own) and told it to use D3 to make a striking data visualization. It made an interactive global map, lifespan running graph, start/end date analysis, and much more. Incredible. (approach and links below)↗