From a former employer - which was a real estate developer. The CFO didn't know what an IRR is, and doesn't seem to understand compounding. He was a bean counter who rose to CFO just by virtue of never leaving over 30 years. Because the big boss isn't a finance guy either, he just defers to the CFO. But it was apparent when we discussed projects with the CFO that he had no clue what we were talking about.
Us: "Project equity in is $100mn, so with a 15% IRR, in 3 years we'd be looking at $152mn."
CFO: "No you'd be looking at $115mn. And if it's so low a return, then we should just buy some shares in public stock."
Us: "No, it's 15% IRR - you know, an annual return of 15%...."
CFO: "That's what I said. A 15% return. No need. We just buy some shares."