Nordhaus (& friends) assumed everyone would be working (white-collar jobs) indoors so any change of the outdoor climate would only impact GDP by ~8%!!🤦 Somehow, they assumed food would just grow itself... somewhere, without any human labor input or viable land <insert hand waving>.
So, we now are living with the results of the totally false assumptions that the econ world has been using since the mid-1970s.
breadandcircuses