https://en.wikipedia.org/wiki/Efficient-market_hypothesis might be a good start.
That's pure ideology and not empirical. There's you know, even a large section there in that article pointing that out
Step 2: https://en.wikipedia.org/wiki/Grossman%E2%80%93Stiglitz_para...
That's pure ideology and not empirical. There's you know, even a large section there in that article pointing that out