The frustrating aspect is that that guy almost certainly possesses a handful of facts well worth knowing, written nowhere and just picked up casually along the way. The confounding factor is that he almost certainly does not realize their value, even enough to relate them to someone as items of interest.

I picked up a few such facts from long experience with the construction industry. I've only heard one of them ever mentioned publicly. By whom, you ask? Donald Trump, way back in "The Art of the Deal". Make of that what you will.