The price of a stock is strongly influenced by the behavior of the traders in a nontrivial way. - Didier Sornette

Profiting from being in the minority leads to interesting paradoxes. Rather diabolically, if all traders use the same set of rules, they will end up doing the same thing at the same time and cannot therefore be in the minority.

One trader's move in the market can be interpreted by another trader as relevant additional information due to the uncertainty he faces.

Since it is the actions of investors whose buy and sell decisions move prices up and down, any deviation from a random walk has ultimately to be traced back to the behavior of investors.