Philosophy
Philosophical explanations are accounts that aim to make sense of fundamental aspects of reality, knowledge, and value through reasoned argument rather than empirical observation alone. Unlike scientific explanations, which typically rely on testable hypotheses and causal mechanisms, philosophical explanations often address conceptual, normative, or existential questions, such as why there is something rather than nothing, what constitutes a just society, or how free will is possible. They are characterized by their reliance on logical coherence, thought experiments, and the analysis of concepts, and they frequently serve as foundations for other disciplines. The term also refers to a specific 1981 book by Robert Nozick, which explores the nature of explanation itself and proposes an alternative to traditional justificatory accounts.
Philosophical explanations differ from scientific ones in that they do not necessarily aim at empirical prediction or control. Instead, they seek to provide understanding by clarifying concepts, resolving paradoxes, or offering coherent frameworks. For instance, the question of why there is something rather than nothing is not answerable by physics alone, as it concerns the very existence of the physical world. Philosophical explanations often employ thought experiments, such as the brain-in-a-vat scenario, to test intuitions about knowledge and reality. They also address normative questions, such as what makes an action right or wrong, which cannot be settled by descriptive facts alone. The scope of philosophical explanation is thus broad, encompassing metaphysics, epistemology, ethics, and logic, and it often underpins the assumptions of other disciplines.
Robert Nozick's 1981 book Philosophical Explanations is a landmark work that challenges the traditional project of providing proofs or coercive justifications for philosophical positions. Nozick argues that philosophy should aim for explanations that make the world intelligible, rather than proofs that compel assent. He introduces the concept of 'explanatory depth' and suggests that a philosophical theory is better if it explains more phenomena with fewer assumptions. The book covers topics such as personal identity, free will, knowledge, and ethics, offering novel theories like the 'closest continuer' account of identity and the 'tracking' theory of knowledge. Nozick also defends a form of 'non-coercive' philosophy, where arguments are presented as invitations to see things in a new way, rather than as forced conclusions.
Beyond Nozick's famous work, the term 'philosophical explanation' has a rich history. In ancient philosophy, Aristotle's four causes (material, formal, efficient, final) were a framework for explaining natural phenomena, blending what we now separate into scientific and philosophical explanation. In the 20th century, the logical positivists, such as Rudolf Carnap, argued that philosophical explanations are either analytic or meaningless, a view that sparked debates about the nature of philosophy itself. A lesser-known figure is the philosopher Wilfrid Sellars, who distinguished between the 'manifest image' and the 'scientific image' of the world, suggesting that philosophical explanation must reconcile these two perspectives. Additionally, in the philosophy of science, Bas van Fraassen proposed that explanations are not objective but context-dependent, challenging the idea that there is a single correct explanation for a phenomenon. These contributions highlight the diversity of approaches to philosophical explanation.
Philosophical explanations have faced criticism from various quarters. Some empiricists argue that explanations that cannot be empirically tested are vacuous, while some postmodernists question the very possibility of objective explanation. However, philosophical explanation remains central to contemporary debates, such as the hard problem of consciousness, where physical explanations seem insufficient to account for subjective experience. In ethics, philosophical explanations are used to justify moral principles, as seen in the work of John Rawls on justice as fairness. In the philosophy of science, the 'inference to the best explanation' is a common method, where scientists accept a theory because it provides the best explanation of the evidence. Thus, despite criticisms, philosophical explanation continues to be a vital tool for understanding the world and our place in it.
This article focuses on the concept of philosophical explanation and its treatment in Nozick's work.
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