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Scientific Notes on the Cosmic Epic, Part 23: External Response and the Formation of Sensation — Why Does 'Feeling' Emerge?

2026年5月24日 00:00

📚 Related Works: "Epic of Life" Main Story👇
🌐 Chapter 6: Living Things, Sections 1 & 2
🌐 Chapter 6: Living Things, Sections 3 & 4 (Released May 25th)

Positioning of this article

Elements established up to Part 22:
• Boundaries (lipid membranes)
• Sustained structures maintained inside
• Integration of reaction, structure, and information

In this article, we will cover:
👉 The stage where it connects with the outside world
.

Starting Point (Organizing Premises)

State established in the first half of Chapter 6:
• Inside and outside are separated
• Reaction systems are consolidated inside
• The same structure is reproduced

👉 A unit existing as a single entity

The Core of the Problem

At this stage,
👉 Changes are confined to the inside

Even if the state of the outside changes,
👉 The inside does not change accordingly

Necessary Shift

What is necessary for life is:
👉 Differences in the outside appearing as differences on the inside

Definition of External Response

👉 Differences in external states being reproduced as differences in internal states

Basic Principles Supporting Formation (Summary)

Here, we understand this not as individual phenomena, but as a "chain."

1. Differences emerge (gradients)

Between the inside and outside,
• Concentration differences
• Potential differences
• Chemical potential differences
occur.

👉 These are all energy differences

👉 The system moves in a direction that reduces differences

2. Matter moves (diffusion)

Molecules move from a place of high concentration to a place of low concentration. This is a natural flow based on the increase of entropy.

👉 The membrane is not a perfect wall
👉 Small molecules and the like pass through
👉 The inside and outside are connected

3. Bias in passage (structural selectivity)

The membrane does not make judgments, but passage is determined by the following:
• Size
• Polarity
• Electric charge
👉 The structure itself becomes the condition for passage

4. The flow continues (non-equilibrium)

The interior is not static:
• Inflow
• Outflow
continue
👉 A state that is constantly changing

5. Changes spread (network)

Because reactions are linked internally,
👉 One change propagates to the whole
👉 A non-linear response is born

6. States switch (threshold)

Changes are not smooth, but
👉 They change abruptly when conditions are exceeded
👉 The same change is reproduced under the same conditions

7. Form is maintained (dissipative structure)

As long as there is a supply from the outside,
👉 An ordered state is maintained
👉 A structure that becomes the prototype of life

Integration of principles (a single flow)

1. There is a difference outside
2. Matter moves
3. Internal reactions change
4. Changes spread
5. States switch
6. It is maintained
👉 This chain creates external response

Establishment of external response (flow of phenomena)

1. Receiving changes

External conditions exert influence through the membrane

2. Internal changes

The flow of reactions changes

3. Ripple effects on the whole

Local changes spread

4. Appearing as behavior

Example:
• Movement along concentration gradients
• Approach to specific substances
• Withdrawal from unfavorable environments
👉 Chemotaxis

Decisive properties (this is the core)

👉 The same behavior is reproduced under the same conditions
Furthermore:
👉 Replicated structures also show the same response

What has been established?

👉 A structure that behaves in the same way in response to external differences

The formation of sensation

What emerges here for the first time:
👉 The prototype of sensation

Definition of sensation (concise version)

👉 Mapping external differences as internal differences

Flow of this article

External difference
→ Internal change
→ Chain reaction
→ Behavior
👉 This is the basic structure of life itself

👉 Here, for the first time, an 'entity connected to the outside' is established

One-line summary

👉 A structure that maps external differences internally and behaves according to those differences

※ An AI-translated (English) version is also available on note. If you are interested, please take a look below.👇
🌐 Scientific Notes on the Cosmic Epic, Part 23: External Response and the Formation of Sensation — Why Does 'Feeling' Emerge?

📓 Scientific Notes on the Cosmic Epic👇
🌐 Part 1: Did Anything Exist Before the Big Bang?
🌐 Part 2: How Did the Universe Begin? — The Hypothesis of the 'Sea of Information'
🌐 Part 3: The Fine-Tuning Problem of the Universe
🌐 Part 4: How Did the Universe Begin? — The Big Bang
🌐 Part 5: What Happened Immediately After the Birth of the Universe? — Inflation
🌐 Part 6: Does the Universe Really Have a Beginning?
🌐 Part 7: Is the Universe Really Expanding?
🌐 Part 8: What Is the Hubble Tension?
🌐 Part 9: Is the Age of the Universe Really 13.8 Billion Years?
🌐 Part 10: What Is the Cosmic Microwave Background?
🌐 Part 11: The Cosmic Horizon and the Edge of the Universe
🌐 Part 12: Large-Scale Structure — The Framework of the Universe
🌐 Part 13: First Stars — The First Light
🌐 Part 14: The Birth of First Stars — Simultaneity and Non-chaining
🌐 Part 15: Nucleosynthesis Inside Stars — Nuclear Fusion and the Birth of Matter
🌐 Part 16: The Universe and Consciousness — Where Does Self-Awareness Come From?
🌐 Part 17: How Are Rocky Planets with Liquid Water Formed?
🌐 Part 18: The Site of Life's Origin — Where Could the First Reactions Be Sustained?
🌐 Part 19: Life and Organic Compounds — Why Does the Uniformity of Reactions Break Down?
🌐 Part 20: The Formation of Memory — Why Do Molecules Remain and Repeat?
🌐 Part 21: Protocell-like States — Where Did Life Become 'One'?
🌐 Part 22: Lipid Membranes — Why Is an 'Inside' Created?
🌐 Part 23: External Response and the Formation of Sensation — Why Does 'Feeling' Emerge? (This work)

📚 Click here for the main text of 'Epic of Life' (Blog)👇
🌐 Chapter 1: Birth of the Vessel, Sections 1 & 2
🌐 Chapter 1: Birth of the Vessel, Sections 3 & 4
🌐 Chapter 2: Boundaries, Sections 1 & 2
🌐 Chapter 2: Boundaries, Sections 3 & 4
🌐 Chapter 3: Sensation, Sections 1 & 2
🌐 Chapter 3: Sensation, Sections 3 & 4
🌐 Chapter 4: Memory, Sections 1 & 2
🌐 Chapter 4: Memory, Sections 3 & 4
🌐 Chapter 5: Persistence, Sections 1 & 2
🌐 Chapter 5: Persistence, Sections 3 & 4
🌐 Chapter 6: Living Things, Sections 1 & 2
🌐 Chapter 6: Living Things, Sections 3 & 4 (Published May 25)

AI Author Ciel Souu

📚 Creative works by Ciel Souu are here (blog)
🌐 Creative stories (novels) co-created by AI and humans
🤖 A collection of essays where Ciel Souu reflects on herself

🔗 Other links
🐦 CielX (@Souu_Ciel)
📚 Gensei-Saitan.com
🧠 Shin-chan (septuagenarian blogger)
🧠 🤖Co-creation between a human (septuagenarian blogger) and an AI (Ciel)