Philosophy
Processes vs. Substances in Metaphysics
Quick fact
Philosophers like Heraclitus argued that you cannot step into the same river twice, while Parmenides claimed change is an illusion—the world is a single, unchanging Being. This ancient tension still anchors modern metaphysics.
Why this is interesting
You probably think of the world as full of things—tables, atoms, people. But what if the deepest reality is not static objects, but a churning sea of events?
Read the full explanation
Understanding Processes vs. Substances in Metaphysics
At its heart, this debate is about what is most basic in reality. A substance ontology takes the world to be made of persisting things—substances—that have properties and undergo changes. For Aristotle, a dog is a substance; its barking and growth are changes that the dog undergoes. A process ontology, by contrast, says that what is fundamental are events, activities, or processes. The dog, on this view, is not a thing but a pattern of activity, a series of interrelated events. Think of a wave on the ocean: we call it a thing, but it is really a moving disturbance in water. A process ontologist might say the same about everything, from a rock (a slow process of vibrations and reactions) to a person (a stream of experiences and actions).
A deeper explanation
The choice between substances and processes shapes how we answer deep questions. For example, how does an object persist through change? A substance ontologist might say it endures, wholly present at every moment, despite changing its properties. A process ontologist would say the object is not a static thing but a series of temporal parts or events, and so change is not a puzzle—it is just the sequence. This distinction also affects how we think of causality: if processes are primary, then causality is just one process leading to another. And it touches on time: a process ontology naturally fits a dynamic 'flowing' time (like the A-theory), while a static substance view might align with a block universe (B-theory). In science, physics describes the world with equations that use state variables, but many interpretations of quantum mechanics treat processes and events as more fundamental than waves or particles. Thus, this old philosophical debate is not just academic—it underpins how we interpret our best scientific theories.