Abstract Object, Oil Painting by Yong, 60 x 60 cm, Abstract, Brush + Pallette, Private Collection, No. Sale.
Abstract objects have often garnered the interest of philosophers because they are taken to raise problems for popular theories. In ontology, abstract objects are considered problematic for physicalism and naturalism. Historically, the most important ontological dispute about abstract objects has been the problem of universals. In epistemology, abstract objects are considered problematic for empiricism. If abstracta lack causal powers or spatial location, how do we know about them? It is hard to say how they can affect our sensory experiences, and yet we seem to agree on a wide range of claims about them. Some, such as Edward Zalta and arguably Plato (in his Theory of Forms), have held that abstract objects constitute the defining subject matter of metaphysics or philosophical inquiry more broadly. To the extent that philosophy is independent of empirical research, and to the extent that empirical questions do not inform questions about abstracta, philosophy would seem specially suited to answering these latter questions.
- Photos: Designing L.A. With Toys & Other Abstract Objects at Last Night’s Car-Free Party (laist.com)
- Mimicking Abstract Classes with Objective-C (eng.kaching.com)
- Lukasz Lazarz. Abstract: “Normative methodology (cognitive logic) in frames of Cognitive Theory of Normativity. Solution to Jorgensen’s dilemma.” (biolawgy.wordpress.com)