The safety features designed for the boilers did not work as well as predicted because they were not based on scientific understanding of the causes of accidents.
Something that sounds good isn’t necessarily a good idea. You need to develop a deep understanding.
A good idea in one field is not necessarily good in another field
For example, consider N-modular hardware redundancy:
Use N identical hardware components in the same role. If they always agree, fine. If not, take a vote.
This is a highly-trusted engineering design principle for safety-critical hardware systems.
