I dissected all pages of the “Textbook on Psychological Manipulation” that arrived in the mail -- the invisible design of sales letters deciphered with behavioral economics

Written by
John Doe
Published on
2026-01-31

table of contents

One day, an envelope arrived in the mail.

The sender is “Direct Publishing.” What's inside seems to be a guide to a sales copy book.

To be honest, at first I thought “see you again.” But somehow I opened it. Somehow I started reading it. And before I knew it, I had read it until the end.

I finished reading it and felt a creep in my back.

This has been “designed” from beginning to end.

From the moment I opened the envelope, my brain was dancing in someone's palm.

Today, I'm going to dissect this DM in pieces, one sheet at a time from the viewpoint of behavioral economics. A treasure trove of techniques any marketer can steal. If you are a consumer, you will be able to understand how “manipulated” you are.

[Envelope] The game starts before opening

What I received was a plain white envelope.

But if you look closely, there's a red label on it.

“Limited Offer Deadline: 2/4 (Wed)”

With just these characters, an alarm starts sounding in the brain.

This“Deadline effect”It's a psychological phenomenon called.

The moment the human brain recognizes that “there is a deadline,” the quality of judgment declines. This is because the “let's think about it later” option disappears. There are only a few days left until February 4. Impatience that “I have to decide now” develops unknowingly.

Plus the word “limited.”

This“scarcity bias”It's a trigger that activates. People value “things they might not be able to get” above their actual value. In a 1975 psychological experiment, the evaluation of the taste of cookies went up just by being told “there are few left.” Even though it's the same cookie.

And one more thing. Being a paper envelope is itself a weapon.

If it's an email, you can delete it with 1 click. However, the active action of “throwing away” paper is necessary. Reaching for the trash can, that moment's hesitation. In that gap, the feeling of “why don't you open it for now” is born.

Three psychological triggers have already been set just on the surface of the envelope.

By the time you open it, the losing streak may have already started.

[1st sheet/surface] The moment you open it, “God” speaks to you

The first thing you see after opening the seal is Clayton Makepeace's face and book.

Letters of recommendation for the person who created the sales method published in the new book “The Art of Creating Advertisements Starting from Emotions” are lined up.

Jay Abraham. Drayton Byrd.

They are people called “world No. 1” in the marketing world.

Their recommendations are strong.

“I have several sales geniuses among my friends, and he's definitely the “best” of them all!” “This guy is so infuriating! I wish I was a genius like him...”

What is happening in your brain the moment you see this?

“Hierarchy of Authority”is working.

Recommended by “the world's No. 1 marketing consultant.” Moreover, it is a comparative expression of “the best among several geniuses.”

It's easier for people to believe if they are compared to “number 1 among A, B, and C” rather than being told “number 1.” Specific comparisons amplify persuasive power.

Also, expressions of jealousy such as “infuriating” and “I wish I were a genius.”

This“Paradoxical recommendation”that's it.

Rather than a normal compliment, the nuance of “I'm frustrated but I have no choice but to admit it” sounds more like real intention. It's not a made-up compliment; it's a design that makes you feel that way.

[1st image, back side] The moment you open it, a flood of authority

The first thing you see after opening the seal is the title “Notice from The Response Office.”

And numbers pop into your eyes.

“85% off”

Normally, I would think “it's a bargain sale,” but this paper doesn't let me do that.

“As a special benefit for those who participate in the sales writer certification course...”

This is the point.

It's not “why don't you buy it because it's cheap?”“Since you are an elected person, you have special rights”That's framing.

This“In-group bias”I'm using it.

People tend to make favorable judgments about “the group they belong to.” If you are aware that you belong to a group called “people who participated in certification courses,” it becomes difficult to refuse “special offers for that group.”

It's not shopping. They exercise their privileges.

Even with the same “85% off,” the way you receive it completely changes with just one way to communicate.

[1st page, back side] Damaging trust due to a flood of authority

When turned over, photos of the faces of 4 more people are lined up.

Rich Schefflen. John Carlton. Bob Bligh. Gary Halbert.

They are people called “legends” in the sales writing world.

“When I want to talk to someone about sales, he is the first person I contact.” “His sales copy is legendary. The ultimate example of how to do it right. People who don't try to absorb his teachings are fools.” “His sales copy is so effective. He's real.” “Since I met him a long time ago, I've admired his sales writing talent.”

The recommendation for the “God Class” is shown on the front side, and the “Legend Class” further drives them down on the back.

This“Building up social proof”that's it.

The fact that “everyone is saying it” is a shortcut for human judgment. Even if you don't think about it yourself, you can draw a conclusion that “if this many people approve it, there's no doubt about it.”

Plus, it comes with a photo of your face.

Seeing a face increases the feeling that “a real person is really saying it” rather than a letter only recommendation. This“Face Effects”It is a phenomenon called, and reliability increases dramatically.

A total of 6 authority figures appeared on the front and back of a sheet of paper.

Why are 6 people lined up when even 1 person is enough?

The answer is simple. “I doubt it's alone. I believe there are 3 people. I'm sure it's 6 people” -- because that's how human cognition works.

[Second page, surface] Graphs speak louder than words

On the second table, you can see a graph that rises steadily.

“Over 20 times in one go!”

Rather than being told in words that “sales have increased 20 times,” I intuitively feel that it is “amazing” when shown in a graph.

This“The Power of Visual Evidence”that's it.

The human brain processes visual information at a higher speed than character information. Also, when you look at something “data-like” like a graph, it becomes easier to unknowingly accept it as an “objective fact.”

Actually, the details of the vertical and horizontal axes of this graph have not been confirmed. However, the brain immediately concludes that “rising steadily = success.”

And one more important thing“Narrative Effects”that's it.

“I used this new publication's method for my best-selling promotion in the past...”

There's not just data, there's a story.

Rather than an explanation that “this method is effective,” the story “this method produced the best results in the past” is many times more memorable. The brain likes stories over logic.

And readers unconsciously think this way.

“If this person were able to do it, I might be able to do it too”

This is the trigger for the purchase.

[2nd sheet, back side] The “invisible reference point” of 210,000 yen

When I turn it over, a bold copy jumps into my eyes.

By stimulating “control sentiment,” the order of sales changes.

And then the specific numbers continue.

“We achieved monthly sales of 97.94 million yen in just 4 months. Since then, it has continued to sell for over 10 years.”

What is being used here“Law of specificity”that's it.

I feel that “monthly sales of 99.94 million yen” are more credible than “sales have gone up.” When there is a fraction, the brain determines “this is real data.” Not 98 million yen, but 99.4 million yen. This difference of 60,000 yen creates reality.

What is even more clever is how to lower the hurdles.

“If you can use 1/10 or 1/20, it will bring you an immeasurable return.”

This“Adjusting Expectations”That's a technique.

People hesitate when they think “it's meaningless if you don't master it perfectly.” However, when they say “it's OK if you can use it even a little bit,” the psychological hurdle drops all at once.

And then the last bad push.

“This is of such good quality that it is at the top and in the S class among them.”

Among our productsrelative evaluationBy showing it, it instills the impression that “this is special.” We compare our company, not our competitors'. So it's not disgusting.

[3rd sheet/surface] The “invisible reference point” of 210,000 yen

When you turn it over, there is a number that suddenly jumps into your eyes.

“219,780 yen”

I doubt my eyes for a moment. expensive.

But this is the trap.

The moment you see this number, a “reference point” is driven into the brain. In psychology“Anchoring effect”It's a phenomenon called.

The first number presented becomes the standard for all subsequent judgments.

After this, no matter what price comes out, it will be judged by “how it compares to 210,000 yen.” If I were told 30,000 yen, I would feel that “I also gained 180,000 yen.” Even if it's 50,000 yen, it's a “160,000 yen deal.”

If you think about it calmly, you should determine “whether it's worth 30,000 yen.” But the brain starts calculating “how much was deducted from 210,000 yen” without permission.

Also, there is another trick to this paper.

“Seriously, I definitely want you to read it”

this broken expression. It's not like an ad. It's like LINE from a friend.

This is intentional. The moment they recognize “it's an advertisement,” the person goes into defensive mode. But if you think it's a “recommendation from a friend,” your guard will drop.

Colloquial language is the strongest weapon to eliminate sales pitch odors.

[3rd image, back side] The last recommendation is in “Postscript”

The third sheet is a letter-style sales letter.

There is a “special discount” and “a pretty bold offer of 85% off” at the beginning, and Yamada Mitsuhiko signed at the end.

And then there's a postscript.

P.S.: What kind of results did we actually achieve by using this newly published method? There is also a letter in which our representative, Ogawa, talks about things like that, so be sure to read them. I'm sure you'll be surprised. I had just joined Direct Publishing when Ogawa achieved these results, and I was really scared... (laughs)

Why bother writing in “postscript”?

The answer is simple. The postscript can be read from the main text.

When given long sentences, people only read “first” and “last.” The middle is read fluently. Therefore, in the world of direct response, it is an imperative rule to place important things at the beginning and postscript.

Also, the content of the postscript is a “story about results.”

Here it is called “limited to 1000 copies”scarcityand “until 2/4”deadlinewill reappear.

The information I saw in the envelope is reminded again at the end. This repetition fuels action.

Why “this order”

If you sort out the structure of this DM, it looks like this.

[Envelopes] Instill a sense of anticipation and urgency ↓[First sheet/table] Build trust with the authority of the “God” class ↓[1st sheet, back] Bad press for authority in the “Legend” class ↓[Second sheet, table] Arouse desire with graphs and performance stories ↓[2nd sheet, back] Imprint the value of the method with “controlling feelings” ↓[3rd sheet/table] Type in expensive anchors and lower your guard in colloquial language ↓[3rd card, back] Call to action with a postscript

Have you noticed?

The reader's psychology is guided in the order of “trust → desire → conviction → action.”

First, it makes me think, “If these people say it, they seem trustworthy.” Next, it makes me think, “If such results come out, I want them.” Also, the number “210,000 yen is 85% off” convinces them that “if you don't buy it now, it's a loss.” Finally, let them act “Let's apply now.”

A state where “there is no reason not to buy” is created before the reader thinks “I want to buy it.”

This is the “design” of direct response marketing.

I think the person who made this DM is a real professional

Each sheet has its meaning. The order also has meaning. The wording also has meaning. Nothing is a coincidence.

210,000 yen is 85% off. Limited to 1000 copies. Until 2/4. Recommended by global sales writers. If you were showered with this much “design,” it's natural for your brain to shake.

However, when I verbalize “why am I trying to buy it,” the way I see it changes.

“Because it's a good deal,” “because it's limited,” and “because everyone recommends it” — these are all “reasons” set up by the seller. It's not a reason that springs from within me.

If you know behavioral economics, you can notice where your judgments are distorted.

If you notice it, you can choose. If you don't notice it, you'll be swept away.

Do you know or don't you know? That much difference changes the contents of the wallet.

What I felt once again through this DM analysis

The essence of marketing is “design.”

Right now, while building a system with vibe coding, I'm designing sales letter writing and running advertisement operations. Then, the numbers are deciphered through quantitative analysis using Claude Code, and the next improvement points are searched.

“Make,” “write,” “spin,” and “analyze” — there are still not many people who can do all these four at once.

In the past, how many people were needed to make this happen?

1 engineer. 1 copywriter. 1 person in charge of advertising operations. 1 data analyst. At least 4 people. If you think about labor costs, it's a team that costs 2 to 3 million yen a month.

Now, if you make full use of AI, even just one person can run it.

Of course, AI isn't magic. In order to master it, it is necessary to know the “key points” of each area. But conversely, if you hold the key points, AI will boost the execution part many times over.

Code is written ten times faster. There are opponents who hit the lighting wall 24 hours a day. SQL statements for data analysis can be generated in an instant. You can submit an infinite number of A/B test proposals for ad creatives.

There is a possibility that 1 person can generate value for 4 people.

That's why this combination is worth it.

Even if each skill isn't special, it becomes rare when combined. And AI takes that combination to a level where it can be realistically rotated. I think market value is something that is created in this way.

Going forward, we will continue to refine this “design ability” through various projects. And what I noticed during that process, I intend to leave it on my blog in this way.

Relation

関連記事

This is some text inside of a div block.

Full record of building the self-hosted AI agent “Moltworker” on Cloudflare

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

I dissected all pages of the “Textbook on Psychological Manipulation” that arrived in the mail -- the invisible design of sales letters deciphered with behavioral economics

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

Claude Code User Guide 2025 Latest Edition/From Introduction to Application

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

Google's NotebookLM is finally integrated with Gemini, and AI research tools enter a new era

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

Will Google's new weapon “Titans” dramatically change AI's memory? Approaching the mystery of long-term memory that surpasses Transformers

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

Thorough explanation of how to use Google Antigravity | Towards an age where anyone can develop apps with AI

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

When I made an AI that automatically writes medical articles, it hit an unexpected wall

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

A story about how I decided to quit “round throwing” on that day when advertising expenses of 4 million yen a month disappeared

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

Let's talk about the case where the new features announced at Webflow Conf 2025 are dangerous from a field perspective

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

[Breaking News] Claude Code on the Web is here! Next-generation AI coding starting with browsers and smartphones has arrived!

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

A story about the “future” of web production that I felt when I participated in Webflow Conf 2025

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

Do Google Business Profile Posts Really Increase Search Rankings? Explain survey results in an easy-to-understand manner

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

I tried making use of Hawkins's author “Power or Force” on the sales page

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

The complete guide to MCP Toolbox for Databases! An innovative tool to securely link AI agents with databases

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

The future that Google's ApertureDB will change! Understanding the Next Generation Database Revolution with Familiar Examples

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

Google's latest technology “MUVERA”! A new-age algorithm that fundamentally changes the search experience

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

SEO strategies in the AI era! In response to the evolution of search engines, I will talk about the importance of GEO using the example of attracting customers to treatment centers

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

AI is changing advertising! Google AI Max for Search Campaign and the Future of Advertising

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

What is query fan-out? The future of search changed by Google's AI Mode and how to understand it with familiar examples

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

What is the new trend “LLMO countermeasures” in the generative AI era? Essential strategies for your website to survive

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

What content is being read and evaluated? Learn the secrets of SEO writing from search intent

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

[Actual experience] Production time reduced to 1/3 with Webflow AI! The new common sense of creating “sellable” sites without code

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

How to Learn Web Production Efficiently - Optimal Learning Methods Based on Brain Science

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

Do I need coding with Webflow? Thorough explanation of what can and cannot be done with No Code

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

The secret to effective ad copywriting that puts consumer sentiment on your side

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

[GA4 alone isn't enough?] A thorough comparison of eBIS vs Usermaven access analysis tools!

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

One way to transform marketing! Efficiency and automation realized by linking Webflow and Clay

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

Elementor Pro Complete Utilization Guide 2025! Thorough explanation from customization to operation

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

How to automatically calculate and display article reading time with Webflow CMS

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

No more hesitation! How to increase site customer attraction with Webflow SEO measures

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

[2024 update] What is GSAP? The Future of Animation Production Will Change with Webflow Integration | Full Explanation

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

WordPress challenges and WebFlow benefits! The results of analyzing the benefits of migration...

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

Extract data from your entire website with Firecrawl! Thorough explanation of basic understanding and usage

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

[Latest Edition] Must-See Plugins List to Power Up Your Webflow Site

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

[2024 Edition] Explaining how to use Elementor for beginners! Build a full-scale site with WordPress

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

[Website production cost] Market price and breakdown as seen from actual examples

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

Even beginners can earn 50,000 a month! How to start web production as a side job?

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

Use your AI skills as a side job! 11 ways that even beginners can challenge are revealed to the public

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

Realized with no-code technology! What future entrepreneurs should know about digital innovation

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

[From price to features] Comparative analysis between WebFlow and Studio! Which one should I choose?

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

Get creative freedom with the Webflow code output feature

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

Basic usage and features of Microsoft Copilot Studio

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

How to create a concept - the secrets of design that captivates customers

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

This is all you need to read to create a piano classroom website! Strategies for success and 5 case studies

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

New OpenAI feature: GPT customization

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

Beginner's Guide to Prompt Engineering

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

Build a website with Webflow! Anyone can easily create a site without coding

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

Advantages of UI design using Webflow

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

The Evolution of Webflow: New Possibilities for Design, Development, and Collaboration

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

Applied Skills in the AI Era: Experience Strategy and Prompt Design

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

Powering up your website with Webflow: Fivetran customer stories

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

How to create a website to express yourself

This is some text inside of a div block.
7 min read
This is some text inside of a div block.

Responding to a Changing Market: A Global Consulting Firm's Perspective

This is some text inside of a div block.
7 min read

Let's start with a free consultation

I'm very sorry. Our resources are limited, and in order to provide high quality services to each company, we are currently offering this special condition (full refund guarantee+free consultation), limited to [first 5 companies per month].

Furthermore, only for those who have applied for a free consultation, we will give you a free “competitor site analysis & improvement proposal report” usually worth 50,000 yen only for those who have applied for a free consultation.

There is a possibility that the slots will fill up quickly, so please apply as soon as possible.

I agree to the privacy policy and first conduct a free consultation
Thank you! Your submission has been received!
Oops! Something went long while appearing the form.