Economics is purely based on assumption, at it’s core. There’s no proof the assumption is true, and recent trends seem to point towards it being false.
Economics assumes people are rational spenders.
But the “economy” is often just represented by the stock market, which is both not rational, and not a good measure of the economy. It’s a great indicator of how much wealth is being extracted from the working class, but it’s shit at representing how most of the money is being spent.