As I understand it, the PhDs, math wizards and super duper computers (all one and the same, really) failed to look at property appreciation over a long enough (and distinct enough) period(s) of time.
Having worked with PhD/mathwizard/superdupercomputers, I can’t say I’m all that surprised. You’d be stunned how little common sense, much less scientfic method, can be applied by those who think they (and arguably should) know better.
Garbage in, garbage out. It’s an old axiom, but probably should be “explored” during the job interview process and at variuos junctures throughout said scientist’s career.