- [x] Hide useless cells - [x] Universal approx theorem - [ ] SELU and leaky RELU - [ ] GD optim viz ([source](https://imgur.com/a/Hqolp#NKsFHJb)) - [ ] Backprop demo - [ ] Batch norm - [ ] Geometric intuitions (DMxUCL 2020 l2, Ng, Olah)
