The PCBU must seek knowledge about ways to eliminate or manage risks, since ignorance of WHS issues in the workplace is not a defence. This means consulting workers and reaching out to other organisations such as equipment manufacturers for information on effective controls, and, for risks relating to individual patients or clients, seeking information from other medical services or the patient's family or carers.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.