 We get our concept of causation from our observation that some things receive their existence from the application and operation of some other things. Yet, to be able to make this observation, we must have our minds primed to do so. Rationalists argue that we cannot make this observation unless we already have the concept of causation. Empiricists, on the other hand, argue that our minds are constituted in a certain way, so that we can gain our ideas of causation and of power in a non-circular manner.