Programmers have been always been subject to feedback loops. Fast feedback liberates us to do our best work, and slow feedback punishes us. To help us understand our predicament, a brief history lesson is given. This is followed by a demonstration of the REPL, an interactive programming tool. Though widely neglected, the REPL has the potential to make us all happier and more productive. There will be something in this talk for programmers of any language or skill level, but note that the demonstration is in JavaScript. Other sessions at this event 🚀🪐 https://www.conf42.com/js2022 — 0:00 Intro 0:46 Talk