Four-dimensionalism

Objects persist by having temporal parts

Four-dimensionalism posits that objects are extended in time as well as space, meaning they have temporal parts just as they have spatial parts. This view contrasts with presentism, which holds that only the present moment is real. Four-dimensionalism includes theories like perdurantism and stage theory, which explain how objects persist over time by having distinct temporal parts.

Example

Consider a tree that grows over time. According to four-dimensionalism, the tree at different times (its temporal parts) are distinct entities, just as its parts at different times (like branches) are distinct spatial parts.

Understanding four-dimensionalism helps clarify debates about identity over time and the nature of temporal reality.

Related concepts

Extended mind thesis

Mind extends into tools and environment

Ship of Theseus

Ship of Theseus paradox questions identity over time

Phenomenology (philosophy)

Epoché brackets existence claims to study how things appear

Functionalism (philosophy of mind)

Mental states are defined by their functional roles, not their material basis

Merleau-Ponty means by the 'flesh of the world'

Merleau-Ponty describes 'flesh of the world' as the intertwining of subject and object, where perception and the perceived are inseparable

Problem of universals

Universals question independent existence

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