---
entity_slug: transportation_cost_differential
evaluator: null
evaluated_at: '2026-02-23T06:33:33.461698'
overall_score: 4.4
scores:
- name: definition_precision
  value: 4.0
  max_value: 5.0
  rationale: The definition clearly distinguishes between different transportation
    modes and their cost implications, with specific focus on water vs. land carriage.
    It avoids circularity and captures a distinct economic concept that directly affects
    market dynamics.
- name: source_grounding
  value: 5.0
  max_value: 5.0
  rationale: This entity is directly grounded in Smith's detailed calculations comparing
    the resource requirements of different transportation methods (100 men + 400 horses
    for land vs. 6-8 men + ship for water). The concept emerges naturally from Smith's
    analysis rather than being imposed from external frameworks.
- name: domain_placement
  value: 5.0
  max_value: 5.0
  rationale: The "Exchange" domain is perfectly appropriate since transportation cost
    differentials directly determine which goods can be profitably traded and over
    what distances. This is fundamentally about the mechanics and feasibility of market
    exchange.
- name: vsm_relevance
  value: 3.0
  max_value: 5.0
  rationale: This entity has some relevance to S1 (operational constraints on primary
    activities) and S4 (environmental factors affecting system adaptation), but it's
    more of an environmental constraint than a core VSM system component. It influences
    system behavior without being a control mechanism itself.
- name: explanatory_value
  value: 5.0
  max_value: 5.0
  rationale: This entity provides excellent explanatory power by illuminating the
    fundamental mechanism that determines market extent and specialization patterns.
    It explains why certain trade relationships exist while others don't, making it
    a key structural determinant rather than just a surface observation.
---

# Evaluation: Transportation Cost Differential

## definition_precision — 4.0 / 5.0

The definition clearly distinguishes between different transportation modes and their cost implications, with specific focus on water vs. land carriage. It avoids circularity and captures a distinct economic concept that directly affects market dynamics.

## source_grounding — 5.0 / 5.0

This entity is directly grounded in Smith's detailed calculations comparing the resource requirements of different transportation methods (100 men + 400 horses for land vs. 6-8 men + ship for water). The concept emerges naturally from Smith's analysis rather than being imposed from external frameworks.

## domain_placement — 5.0 / 5.0

The "Exchange" domain is perfectly appropriate since transportation cost differentials directly determine which goods can be profitably traded and over what distances. This is fundamentally about the mechanics and feasibility of market exchange.

## vsm_relevance — 3.0 / 5.0

This entity has some relevance to S1 (operational constraints on primary activities) and S4 (environmental factors affecting system adaptation), but it's more of an environmental constraint than a core VSM system component. It influences system behavior without being a control mechanism itself.

## explanatory_value — 5.0 / 5.0

This entity provides excellent explanatory power by illuminating the fundamental mechanism that determines market extent and specialization patterns. It explains why certain trade relationships exist while others don't, making it a key structural determinant rather than just a surface observation.