Sometimes I think a little bit of interaction can make concepts easier to understand, or allow you to visualize "What If" situations. Building interaction is quite laborious but I think there is a neat trick using Plot's scales to automatically convert from mouse space to dataspace in quite a general way. https://observablehq.com/@tomlarkworthy/manipulate Then instead of thinking that the data driving a plot is a externally static thing, you can consider it a designable control surface for the Pointer transform.

reminds me of this old experiment https://observablehq.com/@fil/edit-data-with-plot

ah yeah, exactly the same idea.

Super neat!

Supremely well done, thank you for sharing @Tom Larkworthy!! 🙏