https://www.amazon.com/Making-Sense-Chaos-author/dp/02412019...
https://www.amazon.com/Making-Sense-Chaos-author/dp/02412019...
Agent based models have been around since the 1980’s at least. No one uses them in central banks, no one uses them in industry, and you can be very confident that they’ve tried.
This is quite common across the sciences. Some technique doesn't seem to work because of missing crucial insights or technology. Then somebody fills the gaps, and the technique works.
These types of models in economics might or might not become viable at some point.
We can write a very accurate quantum mechanical model for the oxygen atom. But you can't actually simulate it without a galaxy sized classical computer. But it is very realistic=accurate model.
Or you can write and easily simulate a non-realistic semiclassical model. This one is a realistic=efficiently simulatable model.
Obviously a fully agent made model is more realistic in the "accurate" sense, because it correctly models the underlying reality. But if you make realistic agents, you have something inefficient (non realistic in the "simulatable" sense).