Ideas

Writing micrograd made backprop click in a way diagrams never did. What if the browser showed it live? Type a small expression, see the computation graph, then step through the backward pass one node at a time, with each local gradient and the accumulated gradient shown side by side.

Next steps:

1. Sketch the graph layout for expressions with shared nodes.
2. Reuse the micrograd Value design in a few hundred lines of JavaScript.
3. Test it on one friend who has never seen the chain rule.