A rhetorical or imaginative device—often resembling a thought experiment—constructed to elicit, probe, or shift a person's intuitive judgments about a philosophical scenario by foregrounding particular features and downplaying others.

Principle

Presenting a simplified or vivid scenario can systematically steer intuitive responses by making certain background assumptions salient while suppressing complicating factors.

Demonstration

Illustrative scenario → A philosopher asks listeners to imagine a neuroprosthetic replacement for a limb that preserves memory and personality. Recognition → Listeners treat identity as preserved because the narrative emphasizes continuity of psychology. Action → The philosopher uses the elicited intuition to motivate a claim about personal identity. Consequence → The intuition supports a theoretical preference but does not by itself constitute an argument about metaphysical truth.

Misapplication

Treating an intuition pump as a proof: assuming the elicited intuition settles the conceptual or empirical question rather than indicating which assumptions merit further formal or empirical scrutiny.

Consequence

Intuition pumps can reveal which background assumptions are cognitively salient, thereby guiding hypothesis formation, pedagogy, or argumentative strategy; they can also bias discourse by privileging stylized perspectives over comprehensive analysis.

Reversal

When participants lack the shared background assumptions the pump presumes (cultural, linguistic, empirical), or when formal criteria are required, the device fails to produce reliable guidance and may mislead.

Boundary

Clearly within: a deliberately simplified scenario designed to trigger an intuitive judgment. Boundary case: a thought experiment that is accompanied by full formal argumentation—still illustrative but closer to proof. Clearly outside: empirical experiment reporting measured data with no intended imaginative framing.

Semantic Tension

Clarity and accessibility (simplicity) versus fidelity to complexity (accuracy): a more vivid pump is easier to deploy but more likely to obscure relevant variables.

Synthesis

An intuition pump is best understood as a heuristic for surfacing tacit assumptions and testing communicative vividness, not as a substitute for argument, conceptual analysis, or empirical investigation.