TODAYonline | Commentary | Science, shaken, must take stock - 0 views
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Japan's part-natural, part-human disaster is an extraordinary event. As well as dealing with the consequences of an earthquake and tsunami, rescuers are having to evacuate thousands of people from the danger zone around Fukushima. In addition, the country is blighted by blackouts from the shutting of 10 or more nuclear plants. It is a textbook case of how technology can increase our vulnerability through unintended side-effects.
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Yet there had been early warnings from scientists. In 2006, Professor Katsuhiko Ishibashi resigned from a Japanese nuclear power advisory panel, saying the policy of building in earthquake zones could lead to catastrophe, and that design standards for proofing them against damage were too lax. Further back, the seminal study of accidents in complex technologies was Professor Charles Perrow's Normal Accidents, published in 1984
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Things can go wrong with design, equipment, procedures, operators, supplies and the environment. Occasionally two or more will have problems simultaneously; in a complex technology such as a nuclear plant, the potential for this is ever-present.
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in complex systems, "no matter how effective conventional safety devices are, there is a form of accident that is inevitable" - hence the term "normal accidents".
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system accidents occur with many technologies: Take the example of a highway blow-out leading to a pile-up. This may have disastrous consequences for those involved but cannot be described as a disaster. The latter only happens when the technologies involved have the potential to affect many innocent bystanders. This "dread factor" is why the nuclear aspect of Japan's ordeal has come to dominate headlines, even though the tsunami has had much greater immediate impact on lives.
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It is simply too early to say what precisely went wrong at Fukushima, and it has been surprising to see commentators speak with such speed and certainty. Most people accept that they will only ever have a rough understanding of the facts. But they instinctively ask if they can trust those in charge and wonder why governments support particular technologies so strongly.
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Industry and governments need to be more straightforward with the public. The pretence of knowledge is deeply unscientific; a more humble approach where officials are frank about the unknowns would paradoxically engender greater trust.
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Likewise, nuclear's opponents need to adopt a measured approach. We need a fuller democratic debate about the choices we are making. Catastrophic potential needs to be a central criterion in decisions about technology. Advice from experts is useful but the most significant questions are ethical in character.
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If technologies can potentially have disastrous effects on large numbers of innocent bystanders, someone needs to represent their interests. We might expect this to be the role of governments, yet they have generally become advocates of nuclear power because it is a relatively low-carbon technology that reduces reliance on fossil fuels. Unfortunately, this commitment seems to have reduced their ability to be seen to act as honest brokers, something acutely felt at times like these, especially since there have been repeated scandals in Japan over the covering-up of information relating to accidents at reactors.
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Post Fukushima, governments in Germany, Switzerland and Austria already appear to be shifting their policies. Rational voices, such as the Britain's chief scientific adviser John Beddington, are saying quite logically that we should not compare the events in Japan with the situation in Britain, which does not have the same earthquake risk. Unfortunately, such arguments are unlikely to prevail in the politics of risky technologies.
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firms and investors involved in nuclear power have often failed to take regulatory and political risk into account; history shows that nuclear accidents can lead to tighter regulations, which in turn can increase nuclear costs. Further ahead, the proponents of hazardous technologies need to bear the full costs of their products, including insurance liabilities and the cost of independent monitoring of environmental and health effects. As it currently stands, taxpayers would pay for any future nuclear incident.
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Critics of technology are often dubbed in policy circles as anti-science. Yet critical thinking is central to any rational decision-making process - it is less scientific to support a technology uncritically. Accidents happen with all technologies, and are regrettable but not disastrous so long as the technology does not have catastrophic potential; this raises significant questions about whether we want to adopt technologies that do have such potential.