CSDC 469

The authorities called to make decisions concerning health and environmental risks sometimes find themselves facing a situation in which available scientific data are contradictory or quantitatively scarce. It may then be appropriate to base evaluations on the “precautionary principle”, which does not mean applying rules but certain guidelines aimed at managing the situation of uncertainty. This shows the need for making temporary decisions that may be modified on the basis of new facts that eventually become known. Such decisions must be proportional with respect to provisions already taken for other risks. Prudent policies, based on the precautionary principle require that decisions be based on a comparison of the risks and benefits foreseen for the various possible alternatives, including the decision not to intervene. This precautionary approach is connected with the need to encourage every effort for acquiring more thorough knowledge, in the full awareness that science is not able to come to quick conclusions about the absence of risk. The circumstances of uncertainty and provisional solutions make it particularly important that the decision-making process be transparent.