Not a toolbox, not the know-how, not the big data everyone is crazy about, but a question mark, a dissatisfaction. All engineering starts with a problem to solve.
Reliability Engineering, or Risk Assessment is no exception. Once a friend told me reliability engineering is to support a design decision. If there choice/trade-off to be made, no reliability engineering. Forgetting this, it is easy to become paper pushing; following the procedure, generating the reports, but the design keeps going on its on track uninterested.