The simple truth is that most of what anyone thinks about economics models will prove to be wrong. This does not mean that the basic "laws" of supply and demand will be wrong, but the models that try and explain economic phenomena will usually end up being revised or thrown out over time. Most scientific theories are proved wrong.
Karl Popper would state that we cannot prove anything, we can only falsify. Hence, much of what we take for granted will prove to be false. If this is the case, we should anticipate the fact that we will be facing much more uncertainty from modeling when we are in a period of upheaval. It is not just the variables that are uncertain, but the model itself. Beware of any thoughts of certainty.
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