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Parameter/input uncertainty refers to uncertainty due to gaps in scientific knowledge which hamper an adequate capture of the correct causal relations between risk factors.  

The micro-level of uncertainty pertains to specific decision contexts and their relevant knowledge, data, and models.  

The population of a city has a true value.  

There is only one risk management model that is universally accepted.  

Conflict is inevitable in risk management due to the increasing complexity and diversity of the world, human nature, and limited resources.  

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.  

There is a consensus on a set of core principles for risk communication, including that it takes place only at the beginning of the risk analysis process.  

Risk communication is a one-way exchange of information.    

The speed of technological change is not contributing to uncertainty in decision making.  

Risk analysis is not useful for organizations that require short-term feedback to determine whether their risk management decisions were effective.