That division of labour, within the capitalist mode of production, further exploits the worker by limiting their Gattungswesen (species-essence)—the human being's power to determine the purpose to which the product (goods and services) shall be applied; the human nature (species-essence) of the worker is fulfilled with controls the "subject of labour". Hence, does capitalism remove from the worker the right to exercise control upon the value and the effects of their own labour, which, in turn, robs the worker of the ability to either buy (consume) the goods and services, or to receive the full value from the sale of the product. The alienation of the worker from the act of producing renders the worker unable to specialize in a type of productive labour, which is a psychologically satisfying condition; within an industrial system of production, social alienation reduces the worker to an instrument, to an object, and thus cannot productively apply every aspect of one's human nature.