You find it stunning that people don’t intuit a fundamental principal as regards human behavior? You’re either commenting in bad faith or you yourself don’t understand some basic principals of humanity in the 21st century itself.
You can substitute surprising for stunning. In any case, I'm guilty of missing this as much as anyone. I chuckle at Charlie Munger's aphorism:
"Well, I think I’ve been in the top 5% of my age cohort all my life in understanding the power of incentives, and all my life I’ve underestimated it. And never a year passes but I get some surprise that pushes my limit a little farther."
