diff --git a/docs/training/corpus/Layer_0--Primitive_Facts/CORPUS-0015-materials-can-change-value-through-use.md b/docs/training/corpus/Layer_0--Primitive_Facts/CORPUS-0015-materials-can-change-value-through-use.md
deleted file mode 100644
index 2747c66..0000000
--- a/docs/training/corpus/Layer_0--Primitive_Facts/CORPUS-0015-materials-can-change-value-through-use.md
+++ /dev/null
@@ -1,126 +0,0 @@
-# CORPUS-0015
-## Materials Can Change Value Through Use
-### Status: Training Corpus Seed
-### Layer: Layer_0--Primitive_Facts
-### Purpose: Teach that a material's value depends partly on what it can become, not only on what it is now
-### Repository Path: docs/training/corpus/Layer_0--Primitive_Facts/CORPUS-0015-materials-can-change-value-through-use.md
-
----
-
-## 0. Principle
-
-A material's value depends partly on its possible uses.
-
-The same raw material can have different value depending on:
-
-- who needs it
-- what it can become
-- how soon it is needed
-- what tools or skill are available
-- what other materials are scarce
-- whether the intended use changes
-
-A plank is not only a plank.
-
-It may become a roof beam, cart repair, tool handle, bridge part, hull plank, scaffold, crate, or military component.
-
----
-
-## 1. Roman-Visible Example
-
-A trader sees timber stored for ordinary construction.
-
-Then he hears that carts are breaking, boats need repair, and a contractor is seeking straight dry boards.
-
-The timber has not changed physically.
-
-But its value may change because its best use has changed.
-
-Construction timber may become more valuable if redirected into:
-
-- cart parts
-- wheel stock
-- ship repair
-- bridge repair
-- tool handles
-- temporary structures
-
-The material's future use alters its present value.
-
----
-
-## 2. Minimal Use-Value Structure
-
-Material value depends on at least:
-
-1. material type
-2. quality
-3. quantity
-4. current owner
-5. possible uses
-6. scarcity of substitutes
-7. available craftsmen
-8. urgency of demand
-9. cost of transformation
-10. distance to the buyer or workshop
-
-A material's value is not fixed only by its original purpose.
-
----
-
-## 3. Incorrect Modern Assumption
-
-Incorrect assumption:
-
-> A material has one value because it has one intended use.
-
-Correction:
-
-> A material may gain or lose value when conditions make another use more urgent, scarce, or profitable.
-
-The trader must ask not only what the material is, but what it can become.
-
----
-
-## 4. Simulation Use
-
-This principle supports:
-
-- raw material valuation
-- substitution
-- production chains
-- emergency demand
-- scenario chaining
-- workshop shortages
-- military or civic procurement
-- route cargo selection
-- speculative buying
-
-The model should not treat goods as locked permanently to their original category.
-
----
-
-## 5. Canonical Test
-
-If the model sees:
-
-> Timber is stored for construction.
-
-It must ask:
-
-- what quality is the timber?
-- is it dry or green?
-- is it straight, curved, thick, or narrow?
-- what else can it become?
-- who urgently needs that alternate use?
-- what craftsmen can transform it?
-- what would transformation cost?
-- is the alternate use worth more than the original use?
-
-Only then can the material's value be evaluated.
-
----
-
-## 6. Success Condition
-
-If the model stops treating materials as single-purpose goods and starts evaluating what they can become under current conditions, this file is functioning correctly.