Heroes Not Zombies

How come if we know this from economics..…

One of the few things that we do know – for certain – about the future is that actions have consequences. In the world studied by the physical sciences of inanimate matter, it is possible to predict the future with certainty. That is because the entities being studied ARE inanimate. They have no power to initiate an action so they have no power to vary their reaction to a force which is applied to them. In the field of the study of HUMAN action, the situation is fundamentally different. No “stimulus” will ever produce the same response on entities which have the power of thought and the power of choice

………..we still practice Medicine as if one drug will produce the same outcome in every person (it won’t).