4. Taking the human factor into account

In many cases, IT techniques do not offer sufficiently reliable or inexpensive means of preventing certain failure modes from producing the feared effects. In such cases, the safety barriers employed call on the operator, putting man back into the safety loop.

However, the human factor also has its failures, and it is important to be able to analyze and even quantify them, in order to verify that they really do contribute to the desired improvement in reliability. Human factor risk analysis must therefore complement software risk analysis to validate system reliability.

Human factor specialists