this side-effect and decided to ignore it or because he should have been aware of it, so-called negligence. Perception In enactivism theory, perception is understood to be sensorimotor in nature. That is, we carry out actions as an essential part of perceiving the world. Alva Noë states: 'We move our eyes, head and body in taking in what is around us... [we]: crane our necks, peer, squint, reach for our glasses or draw near to get a better look...'...'Perception is a mode of activity on the part of the whole animal...It cannot be represented in terms of merely passive, and internal, processes...' Problem of mental causation Some philosophers (e.g. Donald Davidson) have argued that the mental states the agent invokes as justifying his action are physical states that cause the action. Problems have been raised for this view because the mental states seem to be reduced to mere physical causes. Their mental properties don't seem to be doing any work. If the reasons an agent cites as justifying his action, however, are not the cause of the action, they must explain the action in some other way or be causally impotent. Those who hold the belief that mental properties are reducible to physical properties are known as token-identity reductionists. Some have disagreed with the conclusion that this reduction means the mental explanations are causally impotent while still maintaining that the reduction is possible. For example, Dretske has put forward the viewpoint of reasons as structuring causes. This viewpoint maintains that the relation, intentional properties that are created in the process of justifying one's actions are causally potent in that the process is an instance of action. When considering that actions are causally potent, Dretske claims that the process of justifying one's actions is necessarily part of the causal system. Others have objected to the belief that mental states can cause physical action without asserting that mental properties can be reduced to physical properties. Such individuals suggest that mental states are epiphenomenal, in that they have no impact on physical states, but are nonetheless distinct entities (see epiphenomenalism). See also Ability Action theory Direct action Enactivism Praxeology Social action Social relation Affectional action Instrumental action Traditional action Value-rational action Communicative action Dramaturgical action Symbolic interactionism Group action Philosophy of Spinoza References J. R. Finkel, "History of the Arrow", Up Down Left Right (2011) Further reading External links Concepts in metaphysics Determinism