I haven't read this in detail, but according to commentary here [1] it sounds like they don't actually have 40-year returns, they have 10-year data and extrapol

I haven't read this in detail, but according to commentary here [1] it sounds like they don't actually have 40-year returns, they have 10-year data and extrapolate. Which is a massively different thing, and as you would expect would favor things closer to trade school (immediately useful) rather than the sort of careers people going to top schools are likely to aim for (many of which have high pay much later). [1] https://marginalrevolution.com/marginalrevolution/2019/11/the-future-of-higher-education.html#comments https://marginalrevolution.com/marginalrevolution/2019/11/th...