Mainstream moral theories deal with situations in which the outcome of each possible action is well-determined and knowable. In order to make ethics relevant for problems of risk and uncertainty, moral theories have to be extended so that they cover actions whose outcomes are not determinable beforehand. One approach to this extension problem is to develop methods for appraising probabilistic combinations of outcomes. This approach is investigated and shown not to solve the problem. An alternative approach is then developed. Its (...) starting-point is that everyone has a prima facie moral right not to be exposed to risk. However, this right can be overridden if the risk-exposure is part of an equitable system for risk-taking that works to the advantage of the individual risk-exposed person. (shrink)

This article is an attempt at a systematic account of decision making under greater uncertainty than what traditional, mathematically oriented decision theory can cope with. Four components of great uncertainty are distinguished: (1) the identity of the options is not well determined (uncertainty of demarcation) ; (2) the consequences of at least some option are unknown (uncertainty of consequences); (3) it is not clear whether information obtained from others, such as experts, can be relied on (uncertainty of reliance); and (4) (...) the values relevant for the decision are not determined with sufficient precision (uncertainty of values). Some possible strategy types are proposed for each of these components. Decisions related to environmental issues are used to illustrate the proposals. (shrink)

Safety is an essential ethical requirement in engineering design. Strategies for safe design are used not only to reduce estimated probabilities of injuries but also to cope with hazards and eventualities that cannot be assigned meaningful probabilities. The notion of safe design has important ethical dimensions, such as that of determining the responsibility that a designer has for future uses (and misuses) of the designed object.

Safety is an essential ethical requirement in engineering design. Strategies for safe design are used not only to reduce estimated probabilities of injuries but also to cope with hazards and eventualities that cannot be assigned meaningful probabilities. The notion of safe design has important ethical dimensions, such as that of determining the responsibility that a designer has for future uses of the designed object.