Autopoiesis
Living systems continually produce and maintain the components that define their organization.
The Mechanism: Autopoiesis, developed by biologists Humberto Maturana and Francisco Varela, describes living systems as networks of processes that produce and maintain the components of the network itself. The concept addresses organization, not an organism's complete dependence or independence from its environment.
The Philosophical Pivot: A living identity may persist through material replacement because continuity lies partly in the organization of processes. The self is less like a fixed object and more like an activity that maintains itself over time.
The Horizon: Autopoiesis has influenced biology, cognition, and systems theory. Applying it to social institutions or machines is analogical and debated; a metaphorical extension should not be mistaken for biological equivalence.
Living systems exchange matter and energy with their environments even while maintaining an internal organization. Self-production does not mean isolation.
The theory raises questions about how boundaries emerge and how a system distinguishes what belongs to its organization from what changes it.
Continuity may depend on the pattern of relations that survives change rather than on any single unchanged component.
A living system may persist not by keeping its parts, but by renewing their organization.
If the parts that make me are continually changing, what pattern of relations do I call my continuing self?