It was their contribution to a regional impact assessment. As it includes judgements, it has a political character. The search for an acceptable risk is not a problem of scientific optimization but social acceptance. From the scientific position, risk deals with uncertain analysis and prognosis of impacts, emphasizing probability aspects. There is no risk if something is sure or unknown.
Insurances use a view which emphasizes on dangers, i.e. the potential extent of damages.
Therefore, insurance risks have to be predictable. The social view of risk deals with the social acceptability of and communication on risks rather than with optimizing solutions. So, it focusses on agreement and includes individual affection, uncertainty of values, and uncertainty of related decisions. Jurisdiction only recently has started to deal with risks and defines risk as an enlargement of the term 'danger'. It is the product of the intensity of damages and the probability of their occurance.