This is really impressive-- In a talk some time back Bret Victor talks about interfaces that look and feel like this; where you can see the whole system, "running" and tinker with parts without, "re-compiling" or, "re-writing" programs. I always love finding things like this on HN.<p><a href="https://www.youtube.com/watch?v=ZfytHvgHybA&ab_channel=stupidbob306" rel="nofollow">https://www.youtube.com/watch?v=ZfytHvgHybA&ab_channel=stupi...</a>