[ambicapter]

"I did my due diligence but didn't anticipate these risks". Doesn't sound like due diligence to me. Not having a plan to unwind your position if SHTF doesn't sound like due diligence to me. You can argue it any way you like but it boils down to "The money was good and I didn't think the worst was gonna happen".

[harmmonica]

I agree with this and tend to think due diligence needs to not only account for the regular course of business, but also for the exceptional circumstance. You'll never be able to accuse someone of not thinking of the exceptional UPSIDE circumstance, of course. The problem is the complete ignorance of the exceptional downside. That said, your parent is right that you can't really do due diligence on "war in Iran." Instead you something like "ok, if there's a shock to the system and 20% of our loans default what does that mean for our business?"

[paganel]

My comment was mostly against the idea that due diligence is a silver bullet, it isn’t. Of course that it can “catch” the most egregious cases, like outright fraud, but, again, no due diligence process can read the future.