Why shouldn't this reassure someone who is an expert in risks? Risk comes not only from the technical and scientific aspects of an operation but also the organi

Why shouldn't this reassure someone who is an expert in risks? Risk comes not only from the technical and scientific aspects of an operation but also the organizational processes, compliance, and actual execution. And for those, incentives and motivations matter a lot. Knowing his wife and child were going to be in the building, you can bet he watched the workers like a hawk and triple-checked all the work and every calculation. Without his wife and child there, it's less certain whether he was equally thorough. Risk is something like likelihood of failure multiplied by consequences of failure. If you increase the consequences some but decrease the likelihood more, you could have a net reduction in risk.