Overview and Context
“Some science fiction” is not a novel but a short essay by W. V. O. Quine, the American philosopher and logician who was among the most influential thinkers of twentieth-century analytic philosophy. Quine wrote it as a philosophical excursion into a question that also animates much of his other work: what it means for something to exist, and what the relationship is between our theories and the world they purport to describe. Quine used the device of an imagined or fictional science-fiction scenario to clarify a point he had been making in more technical form elsewhere, and the piece is valued less for any narrative drama than for the way it makes a subtle metaphysical issue vivid.
Quine’s career had been shaped by a steady skepticism toward entrenched distinctions in philosophy. His best-known essay, “Two Dogmas of Empiricism,” attacked the analytic/synthetic distinction and the idea that individual statements can be verified in isolation. His book Word and Object developed the thesis of the indeterminacy of translation, and his later Ontological Relativity extended the view that ontology itself is relative to a background theory. “Some science fiction” belongs to this ontological strand: it is a piece in which Quine tries to show, in a light and accessible way, how a theory’s commitments to objects can be understood and how such commitments can be read off from its regimentation in logic. The essay therefore sits at the boundary between serious technical philosophy and popular exposition.
The Central Puzzle and the Imagined Scenario
The essay’s engine is a thought experiment. Quine asks the reader to imagine a community, or an unfamiliar culture or theory, whose way of describing the world differs strikingly from our own. The point of the fiction is to test a claim that had become central to his thinking: that ontological questions, such as whether there are numbers, physical objects, or abstract entities, are not settled by inspecting the world directly, but are answered by determining what a theory is committed to saying exists. A theory is committed to the entities over which its bound variables must range in order for its sentences to be true. This is the core of what Quine called the criterion of ontological commitment, often summarized as “to be is to be the value of a bound variable.”
Quine’s method in the essay is to show how two theories that appear to speak about very different things might nevertheless be equivalent, or how a single body of evidence might be accommodated by theories with different ontologies. The science-fiction framing lets him make this concrete: an imagined world with its own inhabitants, physics, and vocabulary serves as a foil against which our ordinary talk of objects can be compared. Through this comparison he argues that ontology is a matter of choice and convenience constrained by empirical adequacy, rather than a discovery of which things are “really there” in some theory-independent sense.
The Argument Developed
The argument proceeds in stages. First, Quine establishes that the question “what is there?” can be recast as “what must a theory say there is, in order to say what it says?” Second, he notes that this recasting depends on the theory being stated in a canonical form, one in which quantifiers and bound variables make its commitments explicit. Ordinary language often obscures these commitments, so the work of ontology involves paraphrasing discourse into the regimented notation of predicate logic. The science-fiction scenario is useful here because it places us in a position where the native vocabulary of an imagined community must be translated into our own logical framework, and the translation reveals which entities the imagined theory quietly presupposes.
Third, Quine draws the conclusion that the ontology of any theory is relative to the choice of a background language and the manual for translating between languages. Two theories may agree on all observable consequences and yet differ on the entities they posit, and nothing in the observable facts forces a choice between them. This is the sense in which ontology is “relative.” Quine is careful not to conclude that anything goes; rather, he holds that scientific and everyday theories must fit the observational evidence, and that among the empirically adequate options we choose the one that is simplest and most useful. The imagined community illustrates how such a choice might be made, and how different but equally workable schemes can coexist.
Fourth, the essay turns to the relationship between this ontological relativity and realism. Quine suggests that the apparent sharpness of the question “really, what exists?” is an illusion produced by our habit of speaking as if our own theory were the uniquely correct description of a pre-given world. Once we see the translation and regimentation involved, we can accept the objects of our best theory as real in the only sense available to us, namely as the values of the variables of the theory we have adopted, without supposing that this exhausts all possible ways of being real.
Key Ideas and Examples
Several ideas recur throughout the essay and tie it to Quine’s broader program. The first is the notion of a canonical notation, a regimented language in which the commitments of a theory are displayed transparently. The second is the paraphrase strategy, by which apparently troublesome talk, such as talk about attributes, possibilities, or fictional objects, can be rewritten in a way that avoids committing to the entities it seems to name. The third is the idea of economy: a good ontology posits no more than the theory requires, and the Occam-style pressure to minimize commitments is treated as a practical and theoretical virtue rather than a metaphysical truth.
The science-fiction examples are used to dramatize these ideas. By imagining a world in which objects or categories are arranged differently, Quine can show that what counts as a “basic” object is a matter of how we slice the world through language, not a fact that could be read off unmediated experience. The fictional setting gives him room to vary the parameters of the example freely, so that the reader can see the structure of the argument without the distraction of familiar presuppositions. The essay’s playfulness is a deliberate feature: Quine wants to make visible what he takes to be an assumption many readers bring unexamined to questions about existence.
Conclusions and Reception
The essay concludes that ontological questions, properly understood, are questions about how best to organize a theory given the evidence, and that the apparent depth of the question “what really exists?” is largely a product of confusion about the role of language and translation. Quine does not claim that his imagined scenarios settle every issue, but he presents them as an illustration of a stance he regarded as both philosophically defensible and in keeping with the practice of science. The result is a pragmatic, naturalistic conception of ontology in which commitment to objects is earned through the successful application of our best theories.
As a short piece, “Some science fiction” has been read mainly as an accessible route into the ideas of ontological commitment and relativity that are developed at length in Quine’s major works. Its significance lies in the way it shows Quine’s characteristic blend of technical rigor and an almost literary delight in thought experiments. Philosophers working on ontology, reference, and the philosophy of language have drawn on the essay as a clear statement of positions that were otherwise dense and scattered across his more formal writings. It remains a useful entry point for readers who want to see how Quine’s skepticism toward traditional metaphysics translated into concrete arguments about what our theories commit us to.
