In my experience, the ones who most fervently believe they have such “clues” are often the same ones who lack them. I can’t tell you the number of times I’ve encountered engineers who become indignant when someone tries to redirect them to safe, scalable, and operable ways to solve problems. What they often want is to have the problem solved their way because it would be less work for them or otherwise advance their own personal interests, regardless of the problems that doing so would create or the risks it would pose. They don’t want a discussion; they want a rubber stamp.