I interpreted the story as humble bragging. Too many HN stories-of-convenience are nothing more than humble bragging. It would have been a much more impactful comment if he spent the second half talking about serious losses and learning a lesson.

Every time I post about how I'm bad as something or made a mistake, then learned a lesson, it is followed by a bunch of humble braggers telling stories-of-convenience about how they avoided such an "obvious" mistake.

Finally, let me share yet another of my lifetime fails: During 2008/2009, I was convinced everyone was wrong about risk management at huge investment banks -- subprime mortgages and synthetic CDO^2! I was thought they were infallible, filled with financial maths geniuses would could navigate any financial storm. I was dead wrong. I was shocked when Goldman's legendary Global Alpha fund CLOSED after massive losses. Could. not. believe. it. It's still a bit shocking to write, because their record of outperforming the S&P 500 using partner money was the stuff of legend. And, yes, I lost so much money against Bear, Stearns & Co. and Lehman Brothers. Ouch!