I work in insurance liability and once dealt with an aeronautical engineer about an accident he'd caused (pulled out from a stop sign into the path of an oncoming car he never saw but
several independent witness did).
He stated that due to his occupation, his opinion of the loss (he contended the other driver must be liable because the other car must have been speeding so fast that our policyholder couldn't have seen him, which is a common argument from those who just didn't see the other car) was correct because engineers are never wrong.
I couldn't resist, going into all the other engineering disasters in history, and he immediately noted none were
aeronautical engineering problems and again, people in his profession were never wrong.
"Oh?," I asked, "How about -" and I then went into all the airship (going back to the Roma) disasters, and by the time I came around to the Comet airliner, he started screaming.
My manager, who of course got a call from him later with the same argument, told him he needed to embrace the reality and that was that.