I can test a robot, but how do I prove it's safe?
You say testing is simple and validation defeats you. Look closer: you expect validation to deliver certainty. It never will. A test confirms one case. Validation asks you to account for cases you have not seen — and no accounting ever closes that gap completely. The defeat you feel is not technical. It is the quiet belief that if you just worked harder, checked more cases, read more standards, you would arrive at proof. You will not. This belief flatters your effort while guaranteeing your frustration. What is within your power: define what you tested, state plainly what you did not, and make the judgment call anyway. That is the whole of the work. Anyone who tells you otherwise is selling you comfort, not competence.
You cannot prove safety. No one ever has, not for a robot, not for a bridge, not for a man. You can only accumulate evidence, reduce ignorance, and make a defensible judgment. Stop chasing certainty — it does not exist. Your task is disciplined evidence, not proof.
What changes unlock by starting
- You stop demanding certainty from yourself and produce a documented, defensible judgment instead.
- You know exactly what you tested, what you didn't, and why that gap is acceptable.
- You can explain your validation decision to someone else without flinching or over-promising.
- The question 'can I ever truly know' stops paralyzing you, replaced by a clear stopping point you set yourself.