Hard determinism vs Soft determinism in Philosophy - What is The Difference?

Last Updated Feb 2, 2025

Soft determinism, also known as compatibilism, argues that free will and determinism can coexist because human actions are determined by internal motivations rather than external constraints. This perspective suggests that while your choices are influenced by prior causes, you still possess the freedom to act according to your desires and reasoning. Explore the rest of the article to understand how soft determinism reconciles freedom and causality.

Table of Comparison

Aspect Soft Determinism Hard Determinism
Definition Belief that determinism and free will coexist; human actions are determined but still free when voluntary. Belief that all events, including human actions, are determined by causes; free will is an illusion.
Free Will Accepted but redefined; freedom means acting according to one's desires without external constraints. Rejected; free will does not exist as all choices are pre-determined.
Moral Responsibility Individuals are morally responsible since actions stem from internal motivations. Moral responsibility is questionable or denied due to lack of true freedom.
Key Philosophers Daniel Dennett, Thomas Hobbes, David Hume Baron d'Holbach, Ted Honderich
View on Determinism Determinism is true but compatible with free will. Determinism is absolute and incompatible with free will.
Example A person choosing to study because they desire knowledge, despite influences. A person's choice to study is fully caused by prior states and laws.

Introduction to Determinism

Determinism is the philosophical concept that all events, including human actions, are determined by prior causes, leaving no room for randomness or free will. Soft determinism, also known as compatibilism, argues that free will can coexist with determinism by redefining free will as the ability to act according to one's desires without external constraints. Hard determinism rejects this notion, asserting that free will is an illusion because every action is causally determined by preceding events.

Defining Hard Determinism

Hard determinism asserts that every event, including human actions and decisions, is predetermined by prior causes, leaving no room for free will or moral responsibility. This view emphasizes that all occurrences are the inevitable results of causal chains governed by natural laws. Hard determinists reject the notion of autonomy, arguing that individuals cannot be held accountable for their actions since choices are simply effects of preceding conditions.

Core Concepts of Soft Determinism

Soft determinism, also known as compatibilism, asserts that free will and determinism are compatible because human actions can be both determined and free when freedom is defined as acting according to one's desires without external constraints. Core concepts include the idea that determinism governs events in the universe, but free will exists in the sense that individuals act voluntarily when their choices align with internal motivations and reasoning. This view contrasts with hard determinism, which denies genuine free will on the basis that all events, including human actions, are entirely causally determined.

Historical Roots and Key Philosophers

Soft determinism, often associated with philosophers like David Hume and Thomas Hobbes, emerged from the classical Enlightenment focus on human reason and the compatibility of free will with causal determinism. Hard determinism, linked to thinkers such as Baruch Spinoza and, more explicitly, Pierre-Simon Laplace, emphasizes a universe governed by strict causal laws that negate free will. Both schools trace their historical roots to debates in early modern philosophy on causality, necessity, and human agency, yet they diverge sharply in the implications for moral responsibility and freedom.

Free Will: An Illusion or Compatible with Determinism?

Soft determinism, or compatibilism, asserts that free will is compatible with determinism, arguing that individuals can act freely when their actions align with internal desires and intentions despite causal chains. Hard determinism rejects the existence of free will, claiming that every event, including human decisions, is the inevitable result of prior causes, rendering true freedom an illusion. The debate hinges on whether free will necessitates absolute freedom from causation, with compatibilists redefining freedom as the capacity to act according to one's motivations without external coercion.

Moral Responsibility in Deterministic Frameworks

Soft determinism, or compatibilism, holds that moral responsibility is compatible with determinism because individuals act according to desires and intentions, even if these are determined by prior causes. Hard determinism denies free will and moral responsibility, asserting that all actions are causally determined and thus individuals cannot be held morally accountable. The debate centers on whether causal determinism eliminates the autonomy required for moral responsibility or if responsibility can coexist with determinism under specific definitions of freedom and control.

Key Arguments for Hard Determinism

Hard determinism asserts that every event, including human actions, is determined by preceding causes, negating free will and moral responsibility. Key arguments emphasize the causal chain's inevitability, stating that choices are predetermined by genetics, environment, and prior events. This perspective relies on the principle of causal determinism, proposing that all occurrences are necessary outcomes within a closed system of natural laws.

Key Arguments for Soft Determinism

Soft determinism argues that free will is compatible with determinism, emphasizing that human actions can be both caused and freely chosen when they align with internal desires and motivations rather than external constraints. This perspective maintains that moral responsibility persists because individuals act according to their own reasons, even if those reasons have deterministic origins. Key arguments highlight the importance of distinguishing between coercion and voluntary action, asserting that freedom depends on the ability to act according to one's authentic self.

Criticisms and Contemporary Debates

Soft determinism faces criticism for its perceived compromise on free will, with skeptics arguing it inadequately addresses moral responsibility under causal determinism. Hard determinism is challenged for negating genuine free will entirely, raising debates about accountability and the justice system's foundation. Contemporary discussions pivot on reconciling neuroscientific findings with philosophical notions of autonomy, emphasizing the impact of causal chains on decision-making and ethical theory.

Conclusion: Implications for Ethics and Society

Soft determinism acknowledges human freedom within causal constraints, allowing ethical responsibility and moral accountability to coexist with determinism. Hard determinism denies free will, challenging traditional notions of moral responsibility and necessitating a reevaluation of justice systems and social policies. The conflict between these views influences philosophical debates on punishment, rehabilitation, and the concepts of blame and praise in society.

Soft determinism Infographic

Hard determinism vs Soft determinism in Philosophy - What is The Difference?


About the author. JK Torgesen is a seasoned author renowned for distilling complex and trending concepts into clear, accessible language for readers of all backgrounds. With years of experience as a writer and educator, Torgesen has developed a reputation for making challenging topics understandable and engaging.

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