Imagine being a carpenter and taking out your ruler, then taking a rubber band and stretching it out beside the ruler and marking inches on the rubber band with a Sharpie marker. Then imagine trying to build a house using the rubber band as a ruler. You'd end up with a pile of garbage, because it would be impossible to know whether the piece you're measuring is actually a certain length, or if the rubber band is just stretched more or less.

That's all economics with fiat money. Economic "measurements" are all full of massive undetectable errors, because the unit of measurement itself constantly changes in unpredictable ways. And science is impossible without measurement, so it's more voodoo than science.

We're so far away from understanding money in a way that's actually relevant to people, that a "recession" becomes a lot less meaningful.