Outside of astronomy, I don't think there's any history of reliable 80+ year scientific forecasts that predict specific changes to our world.
The inputs, the models themselves, and the main way to compute an output had mostly not been invented.
This is a fundamentally unfair comparison. If it couldn’t be computed analytically, it wasn't really possible to compute it 80 years ago. That absolutely doesn’t mean we should just ignore these predictions. Are we supposed to always wait some arbitrary time before listening to long term prediction?
I never said we should ignore any prediction. My calculation is purely Bayesian: how much prior trust should you place in a model (or class of models) with no long-term track record of success?