Show me the computer program that knows how to create a pencil? And then a toaster? How does it know how many toasters will be needed? Is a toaster more important than a smart watch?

Also, if you have such a Computer program, you could use it to beat the markets. You could use it to compute the perfect prices of futures (because you know the future demand and supply). So I guess there is your answer: if you had such a Computer, you could beat the markets, as long as you don't do that, markets are better.