Assuming that in the future most trading will be done by computers, this means that in a large part the market will be deterministic, or at least predictable, b

Assuming that in the future most trading will be done by computers, this means that in a large part the market will be deterministic, or at least predictable, but not rational or contributing to a better economy. The whole idea of stock markets is to have people apply their sensibility so that the economy moves towards what will be "a better future". Since only people know what is good for them, and 'good' is not possible to define as a specific set of optimization problems, i don't see what is the value of an automatically-trading market.