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docs/training/corpus/Layer_Sketches--Unsorted/SKETCH-0001-bulk-sale-with-buyer-drawdown.md

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+# SKETCH-0001
+## Bulk Sale With Buyer Drawdown
+### Status: Training Corpus Sketch
+### Layer: Layer_Sketches--Unsorted
+### Purpose: Preserve a brainstormed concept for later placement in the training corpus
+### Repository Path: docs/training/corpus/Layer_Sketches--Unsorted/SKETCH-0001-bulk-sale-with-buyer-drawdown.md
+### Proposed Future File: CORPUS-0001-bulk-sale-with-buyer-drawdown.md
+
+---
+
+## 0. Concept
+
+A trader sells oil in bulk, but the buyer does not immediately divide, move, or pay for all of it at once.
+
+Instead:
+
+- the oil remains in a large vessel
+- the buyer stores the vessel in his own warehouse
+- the buyer absorbs the cost of separating oil into smaller vessels
+- the buyer draws down the oil over time
+- payment may occur as the oil is used, resold, or measured out
+
+This separates sale, storage, handling, use, and payment into different moments.
+
+---
+
+## 1. Why It Matters
+
+A simple model treats a sale as one instant:
+
+```text
+seller delivers goods
+buyer pays coin
+transaction ends
+```
+
+This sketch introduces a more realistic structure:
+
+```text
+bulk agreement
+custody changes
+storage continues
+drawdown occurs
+handling cost shifts
+payment may be staged
+risk remains active
+```
+
+The transaction is not complete merely because the parties agree.
+
+---
+
+## 2. Concepts Combined
+
+This sketch combines multiple prior primitives:
+
+- trade requires two locations
+- goods have local prices
+- cost includes more than purchase price
+- profit is sale minus total cost
+- delay is economic cost
+- liquidity differs from wealth
+- credit depends on trust
+- non-coin settlement exists
+- every venture risks loss
+- posture changes by audience
+
+---
+
+## 3. Economic Questions Introduced
+
+The model must ask:
+
+- when does title transfer?
+- when does custody transfer?
+- who pays storage cost?
+- who pays handling and separation cost?
+- who bears leakage or spoilage risk?
+- when is payment due?
+- is payment fixed, staged, or tied to drawdown?
+- what happens if the buyer uses oil but delays payment?
+- does the seller retain a claim until full settlement?
+- does the bulk agreement improve future access?
+
+---
+
+## 4. Roman-Visible Example
+
+A trader brings a large vessel of oil to a buyer in Capua.
+
+The buyer agrees to take the full amount but does not want the trader to divide it into small vessels.
+
+The buyer says:
+
+- store it in my warehouse
+- I will provide smaller vessels
+- I will pay as oil is drawn out
+- I will cover the cost of separation
+- you avoid further handling cost
+
+The trader may accept because immediate handling cost falls.
+
+But risk remains:
+
+- payment is delayed
+- measurement may be disputed
+- leakage may occur
+- the buyer may use oil before settling fully
+- the seller's capital remains partly tied to the buyer's reliability
+
+---
+
+## 5. Likely Final Layer
+
+Likely placement:
+
+`Layer_1--Worked_Examples`
+
+Reason:
+
+The concept is not primitive. It is a worked structure combining cost transfer, deferred payment, storage, trust, and risk.
+
+Potential final file:
+
+`docs/training/corpus/Layer_1--Worked_Examples/CORPUS-00XX-bulk-sale-with-buyer-drawdown.md`
+
+---
+
+## 6. Correct Model Behavior
+
+The model should not treat this as a simple completed sale.
+
+It should separate:
+
+```text
+agreement_made
+custody_transferred
+storage_assigned
+handling_cost_shifted
+drawdown_started
+partial_payment_received
+final_settlement_completed
+```
+
+Each stage may change risk and value.
+
+---
+
+## 7. Incorrect Model Behavior
+
+The model should not assume:
+
+- all payment happens immediately
+- storage cost disappears
+- the seller has no remaining exposure
+- the buyer's warehouse removes all risk
+- bulk sale is automatically better
+- drawdown equals settlement
+- possession always equals full ownership
+
+---
+
+## 8. Success Condition
+
+If the model sees a bulk sale and asks when custody, handling, storage, payment, and risk each transfer, this sketch has been preserved correctly for later corpus development.