Refactoring is cheap now

We used to optimize so much of our time around making mistakes in the code and coming up with the right answer first because refactoring was very expensive

Now refactoring is so cheap that rebuilding something five times doesn't cost five times as much and refactoring things to use it doesn't cost more each time, it gets faster.

Building context around an idea can now involve prototyping in production where you get both the information around how to build something in the wrong way and whether or not it worked.