The contemporary risk aversion strategy, 'no trials without prior guarantee against error' plays a major role in government policy, is a rigid, reactionary system, which places stringent limits on the number of hypotheses that can be tested, and thus on innovation, learning and self-correction. It freezes existing dangers. It assumes that danger can be outlawed, that safety and danger can be severed from each other. Safety and danger are the warp and woof of nature and technology. To focus exclusively on sources of danger is to direct thought and resources toward an infinity of hypothetical or acutely low-probability risks, such as one molecule can cause cancer, while ignoring and damaging the inextricably related sources of safety.