No, calling them dunces isn’t fair. But it’s pretty easy to see why economics-trained individuals are often able to run rings around the butterfly collectors. They simply tend to be more intelligent in the aggregate. Unsurprisingly, those studying philosophy tend to be towards the very top, along with the usual suspects, the engineers, barring the latter’s inability to write. And as usual, it’s the would-be educators that cluster at the bottom:
This may go some way towards explaining why the world’s most famous biologist is so demonstrably hapless outside of his area of immediate expertise.