High taxes, punitive regulations, price controls, and a weak foreign policy were all Carter Hallmarks and well know predicted disasters according to conservatives at the time. Reagan came in, cut taxes and regulation, removed price controls, and developed a strong foreign policy. Hence starting the longest continuous growth period in modern US history.
I don't know why you would claim that "the field of economics" was so baffled. Maybe you're the one who's baffled. If you weren't so closed-minded about conservative values you might not be baffled.