The Illusion of Determinism: Why Free Will Is Real and Why It Matters

The central claim is that determinism — the doctrine that every event, including human choice, is exhaustively caused by prior conditions — is not an established scientific result but a philosophical premise, and that it is false. Locke argues that volition is a real, causally efficacious capacity: consciousness is active, thought is self-generated, and people can choose among options rather than merely react to stimuli. He rejects the inference from findings in conditioning, neuroscience, and genetics to the conclusion that behavior is fully determined, holding that such evidence shows influences, not exhaustive causation. The argument is both epistemological and psychological, and it treats free will as a precondition of goal commitment and self-regulation.

Locke's goal-setting research assumes that people can choose to set goals, commit to them, and regulate their behavior toward them — an assumption that would be undermined if behavior were fully determined by prior causes. The Illusion of Determinism makes that assumption explicit and defends it philosophically. This connection explains why an organizational psychologist wrote a book on free will: the motivational phenomena he studied presuppose volition, and he treats determinist accounts of motivation as describing influences on choice rather than eliminating choice. The book can therefore be read as a philosophical foundation for his empirical program, though the two are logically separable — one can study goals while rejecting Locke's metaethics and epistemology.

Locke draws on Ayn Rand's Objectivism, particularly its epistemology, which holds that consciousness is inherently active and that concepts are formed by a process of abstraction rather than passively received. From this, Locke argues that thought is self-initiated and that determinism mischaracterizes consciousness as a passive mechanism. This grounding matters because it locates the free-will debate in epistemology rather than solely in neuroscience or metaphysics: the claim is that the very act of thinking involves volition. Readers who do not share Objectivist premises may find the argument less persuasive, but understanding its source clarifies why the book's approach differs from mainstream compatibilist and libertarian accounts in academic philosophy.

Locke addresses several common lines of evidence: classical and operant conditioning, behavior genetics, and neuroscience studies such as Libet's experiments on readiness potentials. His response is that these demonstrate influences or correlates of behavior, not exhaustive causation. For example, conditioning shows that organisms are sensitive to contingencies, not that they cannot choose among responses; genetic and neural findings show constraints and predispositions, not the elimination of agency. He also argues that the interpretation of such evidence often smuggles in determinist premises. This line of response parallels arguments made by some philosophers of free will, though Locke's version is distinctive in its Objectivist framing and its focus on the psychology of motivation.

Compatibilists such as Harry Frankfurt and Daniel Dennett argue that free will is compatible with determinism, redefining freedom as acting according to one's own desires or rational capacities rather than as exemption from causation. Locke's position is more libertarian and incompatibilist: he holds that determinism is false and that volition is genuinely self-initiated, so compatibilism would concede too much. This places the book at odds with the dominant strategy in contemporary analytic philosophy, which often tries to reconcile free will with a scientific worldview. Readers should expect a defense of a strong, agent-causal position rather than a survey of the debate. The book is best read alongside compatibilist critiques to see what is genuinely contested.

The principal criticisms concern its reliance on Objectivist epistemology, which is not widely accepted in academic philosophy, and its treatment of scientific evidence. Critics may argue that the book sets up a strawman by construing determinism as a monolithic scientific claim rather than engaging the strongest compatibilist and physicalist positions. Others may note that asserting volition as self-generated does not by itself explain how it works, and that the argument leans on philosophical premises rather than empirical demonstration. The book is also written for a general and Objectivist-inclined audience, which affects its engagement with the technical literature. These are real limits, but the book remains useful for understanding a psychologically motivated defense of agency.