Is this rigor, or am I just afraid to ship?
You call it thoroughness. You keep adding checks, handling cases that may never happen, hardening against ghosts. Somewhere along the way the work stopped being about the system and started being about your own unease. You cannot tell anymore which layer is load-bearing and which one is just there so you can sleep. This is not a moral failing. It is a habit of mind, and habits can be examined. Rigor has a target: a known failure mode, a real cost if it happens. Over-engineering has no target. It is armor built against a feeling, not a threat. That is the whole difference, and you already know it — you just have not made yourself say it out loud, sentence by sentence, part by part. You will not solve this by trying harder to be certain. Certainty is not available to you. What is available is a discipline: naming the specific failure each safeguard prevents, and its cost if unaddressed. What survives that test, keep. What does not, cut — today, not after one more review.
Rigor answers a question you can name: what fails, and how. Anxiety answers no question at all, so it never stops. Before you add another layer, state the exact failure it prevents, in one sentence. If you cannot, you are not engineering. You are hiding. Cut it. Ship. Let the real world tell you what actually breaks.
What changes unlock by starting
- A one-line test you can run on any safeguard before you build it, instead of after
- A shorter list of things you are protecting against, and a clearer reason for each one
- Practice shipping before you feel fully certain, and surviving it
- Less time spent guarding against failures that were never going to happen