A really homogeneous area oﬀering nothing to be cannot be given to any perception. The structure of actual perception alone
can teach us what perception is. The pure impression is, therefore, not only undiscoverable, but also imperceptible
and so inconceivable as an instant of perception. If it is introduced, it is because instead of attending to
the experience of perception, we overlook it in favour of the object perceived. A visual ﬁeld is not made up of limited views. But an object seen is made up of bits of matter, and spatial points are external to each other. An isolated datum of perception is inconceivable, at least if we do the mental experiment of attempting to perceive such a thing.
But in the world there are either isolated objects or a physical void.
Phenomenology of Perception