Saw @Will's talk earlier oh his research into tooling to help people understand programs. The program slicer (highlights all lines impacted by the current line) seems particularity useful for understanding large functions.

I really like the direction taken with these tools. On the other hand, I wonder about the "for everyone". Obviously (to me at least!), Rust is not "for everyone". There are many ways of interacting programmatically with a computer for which Rust is just not the right tool. Nor is any other one. Assuming @Will actually believes in "for everyone", I see a risk in not thinking hard about who the audience for these tools actually is, and making them for this audience rather than some hypothetical generic programmer.