Explain the distinction between subjective and objective risk. Explain the engineering definition of risk.

Explain the distinction between subjective and objective risk.
Explain the engineering definition of risk.
Why was it difficult to apply the engineering definition of risk to the trichloroethylene case?
How does a riskbenefit analysis differ from a costbenefit analysis?
Explain, by using your own words, the main ideas behind the precautionary principle.
Must defenders of the riskbenefit principle reject the precautionary principle and vice versa?
What were the root causes of the Fukushima accident in Japan?
What role, if any, should the principle of informed consent play in risk management