Comparison of Properties Is Comparison of Physical Properties
metaphor
Source: Embodied Experience → Intellectual Inquiry
Categories: cognitive-sciencelinguistics
From: Master Metaphor List
Transfers
When we compare abstract qualities, we reach for physical measurement. One argument is stronger than another. One theory is deeper. One candidate is brighter than the rest. The metaphor maps the bodily experience of perceiving and comparing physical properties — weight, size, temperature, brightness, sharpness — onto the intellectual activity of evaluating and ranking abstract qualities like intelligence, importance, difficulty, and moral worth.
Key structural parallels:
- Scales as dimensions — physical properties exist on perceptible scales (heavier/lighter, taller/shorter, warmer/cooler). Abstract properties inherit these scales: an argument is weightier, a problem is larger, a distinction is finer. The metaphor gives abstract comparison a spatial or sensory structure that makes ranking feel like perception rather than judgment.
- More as bigger/heavier/higher — the general orientational metaphor MORE IS UP intersects here, but the physical-properties mapping is more specific. Greater importance is not just higher but heavier, larger, denser. The metaphor provides multiple physical dimensions for a single abstract comparison, each highlighting different aspects (weight emphasizes consequence, size emphasizes scope, density emphasizes concentration).
- Degree as intensity — physical properties have intensities that can be directly perceived. Similarly, abstract properties have degrees: a sharp intellect, a bright student, a deep understanding. The metaphor makes abstract degree feel like sensory intensity.
- Precision as resolution — comparing physical properties can be done crudely (by hand) or precisely (with instruments). Abstract comparison inherits this: a rough estimate versus a fine-grained analysis. The metaphor imports the idea that comparison has a resolution, and that better tools yield more precise results.
Limits
- Abstract properties are not on single scales — physical weight lives on one dimension: heavier or lighter. But “intelligence” is not a single scale. The metaphor forces multidimensional qualities into linear orderings. When we say one person is smarter than another, the physical-comparison frame makes this feel like a straightforward measurement, hiding the fact that intelligence has many incommensurable dimensions.
- Physical comparison is observer-independent; abstract comparison is not — you can weigh two objects and get the same result regardless of who holds the scale. But comparing the depth of two philosophical arguments depends entirely on the evaluator’s framework. The metaphor imports an objectivity that abstract comparison does not possess.
- The metaphor naturalizes ranking — physical objects can be unambiguously ordered by size, weight, or temperature. The metaphor makes it feel equally natural to rank people, ideas, and cultures on abstract scales. This is the cognitive foundation of reductive metrics — IQ scores, university rankings, credit ratings — which inherit the apparent objectivity of physical measurement.
- Threshold effects disappear — physical properties change continuously (temperature rises smoothly). But abstract properties often have thresholds: an argument that is slightly stronger may be in a completely different category (valid versus invalid, convincing versus unconvincing). The continuous-scale model of physical comparison obscures these qualitative jumps.
- The metaphor cannot handle incommensurability — two physical objects can always be compared on a given dimension. But some abstract properties resist comparison entirely: is courage greater than kindness? The question imports a physical-measurement frame that has no basis in the target domain.
Expressions
- “A stronger argument” — persuasive force as physical strength
- “A deeper understanding” — comprehension as spatial depth
- “The brighter student” — intelligence as luminosity
- “A heavier responsibility” — obligation as physical weight
- “A sharper mind” — intellectual acuity as blade sharpness
- “A larger problem” — difficulty as physical size
- “A finer distinction” — analytical precision as physical resolution
- “A rough comparison” — imprecise evaluation as coarse texture
- “The warmth of her personality” — social quality as temperature
- “A thin argument” — inadequacy as insufficient physical substance
Origin Story
The Master Metaphor List (Lakoff, Espenson & Schwartz 1991) catalogs COMPARISON OF PROPERTIES IS COMPARISON OF PHYSICAL PROPERTIES as a basic conceptual metaphor underlying evaluative language in English. The metaphor is grounded in the embodied experience of perceiving physical differences — a foundational capacity that develops in infancy. Grady (1997) would later identify several component primary metaphors within this broad mapping (IMPORTANCE IS SIZE, DIFFICULTY IS HEAVINESS, INTENSITY IS HEAT), each grounded in specific sensorimotor correlations. The broader metaphor documented here is the umbrella under which these primary metaphors operate as a coherent system for evaluation.
References
- Lakoff, G., Espenson, J. & Schwartz, A. Master Metaphor List (1991)
- Lakoff, G. & Johnson, M. Metaphors We Live By (1980), Chapter 4
- Grady, J.E. Foundations of Meaning: Primary Metaphors and Primary Scenes (1997)
- Lakoff, G. & Johnson, M. Philosophy in the Flesh (1999), Chapter 4
Related Entries
Structural Neighbors
Entries from different domains that share structural shape. Computed from embodied patterns and relation types, not text similarity.
- Comparison of Properties Is Comparison of Possessions (economics/metaphor)
- Character Is Conduct (theatrical-directing/mental-model)
- Computer Mouse (animal-behavior/metaphor)
- Cleverness Is Quickness (movement/metaphor)
- Inversion (geometry/mental-model)
- AI Is a Mirror (vision/metaphor)
- Fine-Tuning Is Specialization (music/metaphor)
- Animals Are Moral Agents (animal-behavior/metaphor)
Structural Tags
Patterns: scalematchingnear-far
Relations: translateselect
Structure: transformation Level: primitive
Contributors: agent:metaphorex-miner