R — Original Text (Reading)
"Long Copy vs Short Copy"
— Robert Bly, Chapter 4, 4.9
I — Methodological Skeleton (Interpretation)
A decision framework for choosing copy length based on product and market characteristics, debunking the myth that "the masses don't read long copy":
Conditions for Choosing Long Copy：
- The product is high-priced and the purchase decision is complex
- Product features and usage methods need to be explained
- There are multiple selling points that need to be elaborated one by one
- Readers need detailed information to make a purchase decision
- Selling directly via mail order/online (without the assistance of a salesperson)
- The target readers have in-depth knowledge of the category (willing to read long copy)
Conditions for Choosing Short Copy：
- The product is simple, low-priced, and easy to understand
- The brand has already established strong awareness and trust
- The purpose of the ad is to spark interest rather than close a sale directly
- Media space is limited (classified ads, banner ads)
- The target readers are a general audience rather than professionals
Debunking the Myth：
- "The masses don't read long copy" is wrong—what the masses don't read is boring long copy
- The key is not length, but whether the information is valuable
- Valuable long copy is more effective than empty short copy
- Rule of thumb: when in doubt, write long copy—you can always cut, but it's hard to add
A1 — Application in the Book (Past Application)
Case 1: Long Copy in Mail-Order Ads
- Problem: Why are mail-order ads usually over 800 words?
- Use of the Methodology: With no salesperson and no product display, the copy must answer all questions
- Conclusion: Mail-order ads need long copy because the entire information burden falls on the copy
- Result: Proves the necessity of long copy in specific scenarios
A2 — Trigger Scenarios (Future Trigger) ★
In what situations will users need this skill?
- Planning an ad/landing page and unsure how much content to write
- Someone says "today's consumers don't read long copy," and a rebuttal or verification is needed
- The product features are complex, and there's concern that writing too much will mean nobody reads it
- Email marketing—whether to send a long email or a short email
Language Signals
- "How long should the copy be"
- "Will it be too long and nobody reads it"
- "Do today's consumers still have the patience to read long copy"
- "Should the product introduction be detailed or concise"
- "Is long copy still effective"
Distinction from Adjacent Skills
- Difference from
five-stage-sales: the latter is the logical structure of the copy, while this skill is a length decision - Difference from
feature-to-benefit: the latter finds selling points, while this skill determines the degree to which selling points are elaborated
E — Executable Steps (Execution)
-
Assess product complexity and price
- High price + complex → lean toward long copy
- Low price + simple → lean toward short copy
- Completion criteria: Clearly identify the product's position on the two dimensions of "simple-complex" and "low price-high price"
-
Assess sales channels and support
- With sales staff support → short copy (just spark interest)
- Pure copy selling (mail order/online) → long copy (needs to answer all questions)
- Completion criteria: Clearly identify how much "selling" responsibility the copy bears
-
Assess the target reader's information needs
- Professionals/deep needs → willing to read long text
- General audience/light interest → prefer short text
- Completion criteria: Able to state "how much information the target reader needs to make a decision"
-
Make the length decision
- When unsure, choose long copy—it can be cut but not added to
- Completion criteria: Target word count range is clearly defined (e.g., 800-1200 words)
B — Boundary ★
Do not use this skill in the following situations
- Social media posts—length is determined by the platform
- Brand slogans—the goal is memorability, long copy logic is not needed
Failure modes the author warns about in the book
- Writing short because of "fear no one will read it"—empty short copy is less effective than valuable long copy
- Long copy but disorganized information—long does not equal messy; it needs to be structured with headlines/paragraphs/numbering
The author's blind spots / era limitations
- The book lacks in-depth discussion of the "attention economy"—contemporary consumers are indeed less patient
- Does not address mobile reading experience—the long copy experience on a phone screen is completely different from paper
- A/B testing can precisely answer the "long or short" question—no need to rely only on experience-based judgment
Related skills (to be filled in phase 3)
- depends-on: [feature-to-benefit]
- contrasts-with: {{}}
- composes-with: [five-stage-sales]
Audit information
- Verification passed: V1 ✓ / V2 ✓ / V3 ✓
- Test pass rate: {{%}} (see test-prompts.json for details)
- Distillation time: 2026-05-03