Risk communicators only need to understand the output of risk analysis, not the input or the work of risk assessors and managers.  

It is the risk manager’s job to decide how to handle the uncertainty that remains in decision making.  

Once a problems and opportunities statement is available, it is easy to identify the risks that need to be addressed in the decision-making process.  

Risk characterization is an important step in risk management that can be done qualitatively or quantitatively, with the latter being preferred because it provides numerical estimates of risk.    

Variability: Variability refers to true differences in attributes due to collection or diversity. Variability is usually not reducible by further measurement or study, although it can be better characterized.  

Uncertainty is not a common factor in modern decision making.  

Safety has been defined in legislative and administrative frameworks as “reasonable certainty of no harm.”  

Public involvement can improve the quality of decisions and build trust in institutions.  

It is impossible to know everything in an uncertain world.  

Knowledge uncertainty refers to uncertainty about the linkages between inputs and outputs in a system.