We have a lot of evidences that, when we decide, really we use models that are very common. An example will explain better.
You decide to go in the bar and you ask for a barley coffee. You think that your decision is completely in your own mind.
But after, asking the barman, we know that:
1) Yesterday and before yesterday NO BARLEY coffees were requested...
2) Today, 12 barley coffees about have been requested...

This example is representative of many others. That is, you are not really deciding in your own: rather, you are in a crowd that seems to decide for you.

We are observing unbelievable examples in the financial markets.
Our question is therefore: are there books, Internet sites, papers about this argument? Many thanks. Ernesto Giorgi