 If atoms and extended partless entities are impossible, so also are unitary sensory objects. Vasubandhu is well practiced in the Abhidharma arguments reducing apparent wholes to their composite entities. Suppose we say I see something that has both blue and yellow in it. How, if it is one unitary thing, can I see these two colors at different points? What makes one point in an object different from another point, if the object is of a single nature? This is clearly parallel to the argument against Īśvara as a single cause of all things. A similar case is movement across an extended thing. As with a partless atom, to step on the near side of a partless extended singular entity would be to step on its far side, too. So there can be no gradual movement across a singular entity. As Vasubandhu concludes, one cannot but derive the need for partless, atomic units from such reasoning. But partless atomic units are imperceptible. So, perception is impossible; apparently perceived objects are only apparent.