Government and engineering alike usually apply the precautionary principle - https://en.wikipedia.org/wiki/Precautionary_principle https://en.wikipedia.org/wiki

Government and engineering alike usually apply the precautionary principle - https://en.wikipedia.org/wiki/Precautionary_principle https://en.wikipedia.org/wiki/Precautionary_principle Which says we need to use grave caution if we make changes with uncertain long-term effect.