Secondly, if we really needed a mental disposition for each memory picture, in addition to the physiological disposition of the brain cells, can we overlook that exactly the same thing would then be necessary for every perception also? The outer impression produces, perhaps through eye or ear or skin, an excitement of the brain cell and this excitement is accompanied by a sensation; and no one fancies that the appearance of this sensation is dependent upon a special disposition for it on the mental side. No one fancies it, because it is evident that such a hypothesis again would be entirely useless. If every new perception needed such a special mental disposition, we should have to presuppose dispositions for everything which possibly can come into our surroundings. Every smell, every word, every face which comes anew to us would need its special ready-made disposition. In other words, our mind would contain the disposition for every possible idea and that would mean that these dispositions would be in no way helps for explanation. If the disposition exists for everything, no one particular thing can be explained by the existence of that disposition. Again we should have to rely entirely upon the physiological brain excitement for explaining that this word or that word is perceived by our mind. But if the brain excitement alone is sufficient to explain the new perception in the mind, then no reason can be found why the renewed brain excitement would not be sufficient to renew the mental experience. Thus there is nowhere room for mental dispositions below the level of consciousness.