How to Design Better Tests: Practical Steps, Common Pitfalls, and a Checklist
How to Design Better Tests: Practical Steps, Common Pitfalls, and a Checklist You launch a small change, run a quick test, and celebrate when metrics tick up—only to find the improvement evaporates a week later. I’ve been on both sides of that story: excited by early results, then humbled by noise, bias, or a faulty…