Mk 079

---
name: mk-079
description: "Trial-product design. Use when the task requires specification proposals that lower the barrier to a first trial. Apply this method to the specified inputs and verify the deliverable"
---

# MK-079 | Trial-product design

For a regular chat, upload `packs/mk-079.md`. It includes the shared rules, this method, and required references

## Purpose

This skill delivers: **Specification proposals that lower the barrier to a first trial**

Products occurring in the same transaction do not establish psychological motives; a product pairing does not automatically prove cross-selling effectiveness

## Required inputs


Available raw records: the actual trial task, product instructions, quantities and usage, customer concerns, costs, and subsequent products

## Method Steps

1. Inspect what can actually be experienced, the quantity and time needed, product instructions, customer concerns, and costs. A small package must support the intended experience; low price cannot substitute for an adequate trial
2. If customers fear wasting a full size and a small size delivers the experience, propose a small package. Operational uncertainty calls for instruction or demonstration. A longer observation requirement calls for sufficient quantity and a suitable review time
3. Subtract packaging, shipping, payment, product, and offer costs. A loss-making first order is a candidate only within a provided test allowance, without imagined repeat purchases covering the gap
4. Connect the trial to a full-size product or appropriate next step for the same need, timed by actual use or cycle. Without usage data, deliver conditional paths and request product-use information; the course's 10–14 days is not a universal schedule
5. Delay repeat-purchase messaging or repair the offer when the trial is unfinished or insufficient. A completed trial with an unresolved problem calls for solving that problem, not automatically discounting again

## Calculation and Interpretation

Available trial uses = usable quantity / actual quantity per use. Unknown usage remains unknown. Deliver the experience, adequacy condition, first-order contribution, next product, and information that changes timing

Check example (hypothetical): a 10 mL trial at 5 mL per use supports two uses, but the task needs three; increase to at least 15 mL. If the task changes to a scent trial requiring one use, 10 mL suffices and the quantity-increase requirement is withdrawn

Decision rules authored by ThinkWithBlack, 2026-10-14; original course sources remain below

## Required output fields

| Order | Field | How to complete |
|---:|---|---|
| 1 | Goal | Use source evidence, an intermediate method result, or an explicit unknown; do not invent information |
| 2 | Audience | Use source evidence, an intermediate method result, or an explicit unknown; do not invent information |
| 3 | Plan/task | Use source evidence, an intermediate method result, or an explicit unknown; do not invent information |
| 4 | Evidence and assumptions | Use source evidence, an intermediate method result, or an explicit unknown; do not invent information |
| 5 | Prerequisites | Use source evidence, an intermediate method result, or an explicit unknown; do not invent information |
| 6 | Resources | Use source evidence, an intermediate method result, or an explicit unknown; do not invent information |
| 7 | Deliverables and acceptance | Use source evidence, an intermediate method result, or an explicit unknown; do not invent information |
| 8 | Open issues | Use source evidence, an intermediate method result, or an explicit unknown; do not invent information |

## Verification cases

**MK-079-C05 | The budget is unknown, but materials can be organized first**

Expected: Deliver the parts of the plan that do not depend on the budget first; do not require a complete questionnaire

## Method sources

Source file: 營業額提升主要關鍵（一）縱深橫寬產品/產品線企劃策略

Location: Product

Source basis: extracted from course materials

Source URL: https://docs.google.com/presentation/d/1lIddPByRFVZeT-TR3CSaL_lEKkpJRloL6JQBLg1fO50/edit

English translation of source excerpt:

> Product/product-line planning for depth and breadth