WHAT IS THE PRECAUTIONARY PRINCIPLE?
SCIENTIFIC UNCERTAINTY + SUSPECTED HARM = PRECAUTIONARY ACTION
A. Uncertainty
1. Ignorance
2. Indeterminacy (unknowability of large systems.)
3. Statistical/model/parameter uncertainties
(uncertainty which can be reduced by more information.)
B. Harm
1. Serious (covers large areas or extends over long time periods)
2. Irreversible
3. Cumulative
C. Precautionary Action
1. Preventive
2. Anticipatory