For those who believe that objects are concrete things and properties are abstract things, what do you make of sensory properties?
Our brains perceive sensory qualities first and build (concepts of) "objects" in our minds. In this sense, sensory properties are more concrete than objects in our minds.
This makes me question the distinction between actual objects and properties in the real world outside our minds. We have concrete sensory inputs vs abstract objects/properties in our minds. This suggests to me that there is no reason to believe there are discreetly divided individual objects out in the real world. Instead, we divide it up in our minds using properties.
Perhaps the notion of real objects goes back to the ideas of things having "substance," but that can be explained by modern notions of physical properties such as mass, volume, force, etc.