This scholastic point of view is directly contradicted by the wealth of sense-objects which enter into our experience as situated in events without any connexion with physical objects.

For example, stray smells, sounds, colours and more subtle nameless sense-objects.

There is no perception of physical objects without perception of sense-objects.

But the converse does not hold: namely, there is abundant perception of sense-objects unaccompanied by any perception of physical objects.

This lack of reciprocity in the relations between sense-objects and physical objects is fatal to the scholastic natural philosophy.
There is a great difference in the _roles_ of the situations of sense-objects and physical objects.