Actionable predictions are tricky though because acting on the prediction before the event happens influences the system. For example, my AI says stock X will

Actionable predictions are tricky though because acting on the prediction before the event happens influences the system. For example, my AI says stock X will go up 10%. My act of buying stock X drives the price up, therefore reinforcing the prediction regardless of it's original accuracy. Or, if I predict stock X will go up 10% before the earnings can and don't tell anybody until after the event is over and don't act on the information, what's the point?