Philosophy
Ontological Pluralism and the Many Ways of Being
Quick fact
Philosophers in the early 20th century, influenced by the existential quantifier, often treated 'being' as a single concept. Ontological pluralism argues that this is a mistake—there are distinct 'ways to be.'
Why this is interesting
When you say numbers exist and chairs exist, you probably don’t mean they exist in the same way—but can you say why? What if all existence isn’t one single thing, but a whole family of different ways of being?
Read the full explanation
Understanding Ontological Pluralism and the Many Ways of Being
Imagine standing in a vast field. In one hand, you hold a physical object—say, a rock. In the other, you hold an abstract concept, like the number 'two.' Both exist in some sense, but do they exist the same way? The rock exists in space and time; the number doesn't seem to be anywhere. Ontological pluralism says these are not just different types of things, but different ways of being. The way a rock exists is different from the way a number exists, and both differ from the way a fictional character exists (if it exists at all). Instead of one single existence predicate, we have many. This view contrasts with ontological monism, which says everything that exists does so in exactly the same sense—there is just one way to be. To make this concrete, think of a sports competition: there are many ways to 'win'—you can win by scoring the most points, by being the fastest, or by being the best over a season. Each is a kind of winning, not just variations of a single 'winning' act. Similarly, ontological pluralism says 'existing' can be realized in multiple distinct ways.
A deeper explanation
Why might we believe in many ways of being? One classic motivation comes from problems with fitting everything into a single existential framework. For instance, the existence of abstract objects (numbers, sets) is radically different from physical objects: abstract objects are not spatiotemporal, not causal, and not observable. A single 'exists' that applies to both is extremely thin. Moreover, certain debates—like whether fictional characters exist or whether holes exist—seem to push us toward distinct modes of being. Some entities exist in a fundamental, grounding way, while others exist derivatively. Ontological pluralists like Kris McDaniel and E.J. Lowe argue that we should take seriously the idea that there are different existential quantifiers, each corresponding to a way of being. For example, a fundamental particle exists in a primary way, while a table exists in a secondary way—its being depends on the arrangement of particles. This view has important consequences: it undermines the idea of a single 'furniture of the universe' and suggests that our ontology should be richer and more nuanced. It also forces us to reconsider how language and logic capture reality; maybe our logical notation is too simple. Applications are mostly metaphysical, but it also impacts philosophy of science (e.g., how we think about laws vs. objects) and mathematics (the existence of abstracta). In short, ontological pluralism is a serious proposal to take the diversity of being more literally, making our metaphysical map more accurate.