Nothing else, that is called science, and the incidental matters resulting from the sciences also go back to these principles and are inseparable from them. Rather, they are called accidents because the custom in perceiving colors is that touch does not perceive them, but rather sight perceives them, so if a blind person perceives them by touch, he may We saw that, because the sense of touch is presented to it with what it would not normally perceive in reality, and similarly with all other methods, if it is presented to it to perceive what it would not normally perceive by means of it, it is said to have been presented to it.