HackerTube / Video
Bret Victor - Inventing on Principle
Rui Oliveira

Bret Victor's talk at CUSEC 2012 in which he argues that creators need immediate feedback and should organize their work around a guiding principle. He demonstrates live-coding and animation tools that show results as you type, and describes his own principle that creators must see what they are making.
It is HN's go-to recommendation for the case that programming environments should give instant feedback, and it appears in nearly every thread on live coding, visual programming or developer tools.
20 Hacker News mentions · 2013–2025