Fast Feedback Systems

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I've written a bit about developing within what I like to call "fast feedback systems". The core value proposition of these systems or tools is that I as an engineer should be able to take a problem statement and begin to better understand it by fast feedback loops of trial and error experimentation.

Usually these systems look a lot like sandboxes or REPL's not unlike CodeSandbox, the built-in Node.js REPL, or even the browser dev tools! I heavily use these tools on a day to day basis, they allow me to take a complex problem and better visualize it through code.