in a world dominated by chaos, we are far removed from the securities of traditional practice. In many important cases, we do not know, and we cannot know, what will happen, or whether our system is safe. We confront issues where facts are uncertain, values in dispute, stakes high and decisions urgent. The only way forward is to recognize that this is where we are at. In the relevant sciences, the style of discourse can no longer be demonstration, as from empirical data to true conclusions. Rather, it must be dialogue, recognizing uncertainty value-commitments, and a plurality of legitimate
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