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20-Knowledge/Briggs/MBTI Study/03 - The Cognitive Functions.md

@@ -28,7 +28,7 @@ All eight functions fall into one of two categories:
 
 ---
 
-## The 8 Functions: Detailed Breakdown
+## Part 1: The 8 Functions: Detailed Breakdown
 
 ### Perceiving Functions (Information Gathering)
 
@@ -145,3 +145,55 @@ All eight functions fall into one of two categories:
     -   A person refusing to laugh at a joke they find morally objectionable, even if everyone else finds it funny.
     -   A deep, quiet empathy where one "tries on" another's emotion to see how it would feel to them, creating a profound understanding.
 -   **Under Stress:** Can become self-righteous, overly sensitive to perceived criticism, and may retreat into a state of emotional isolation, feeling that no one truly understands their unique moral position.
+
+---
+
+## Part 2: Building the Function Stack
+
+The eight functions are not used randomly. For each of the 16 types, the functions are arranged in a specific hierarchy, or "stack," based on a clear set of rules. This stack determines the overall character and focus of the personality.
+
+### The Stack Hierarchy
+
+The four primary roles in the stack dictate how consciously and skillfully a person uses a function.
+
+1.  **Dominant (Hero):** Your most natural and developed function. It's the core of your ego and the lens through which you view the world. You use it so effortlessly it feels like breathing.
+2.  **Auxiliary (Parent):** This function supports the Dominant and provides balance. It's your primary tool for interacting with the world and is used responsibly and maturely. It's often called the "parent" because it's how you "parent" others and yourself.
+3.  **Tertiary (Child):** A source of relief, play, and creativity. It's less mature than the first two functions and can be either a source of joy or childish behavior, especially under mild stress.
+4.  **Inferior (Aspiration):** The least developed and most unconscious of the top four functions. It's your biggest weakness and can cause trouble when you are under extreme stress (a "grip" experience). However, it also represents a path for growth and what you aspire to integrate.
+
+### Core Stacking Rules
+
+Every type's function stack is built using these unbreakable patterns:
+
+1.  **Alternating Orientation:** The functions in the stack always alternate between extraverted and introverted (e.g., i-e-i-e or e-i-e-i).
+2.  **Full House Rule:** The top four functions will always contain one of each function type pair: one Intuition (N), one Sensing (S), one Thinking (T), and one Feeling (F).
+3.  **The E/I Determines the Dominant:** An **E**xtraverted type leads with an extraverted dominant function. An **I**ntroverted type leads with an introverted dominant function.
+4.  **The J/P Determines the First Extraverted Function:**
+    *   For **J**udgers (e.g., INTJ, ESFJ), their first extraverted function is a **J**udging function (Te or Fe).
+    *   For **P**erceivers (e.g., INFP, ESTP), their first extraverted function is a **P**erceiving function (Ne or Se).
+
+### Example Walkthrough: Building the INTJ Stack
+
+Let's apply these rules to your type, INTJ.
+
+1.  **Start with the letters:** **I N T J**
+2.  **Determine Dominant Function:**
+    *   `I` means the dominant function is **I**ntroverted.
+    *   The preferred function pair for an INTJ is Intuition and Thinking (N and T). The most preferred is **N**.
+    *   Therefore, the Dominant function is **Introverted iNtuition (Ni)**.
+3.  **Apply the J/P Rule:**
+    *   `J` means the first extraverted function must be a Judging function (T or F). For an INTJ, this is **T**hinking.
+    *   So, somewhere in the stack, we must have **Extraverted Thinking (Te)**.
+4.  **Build the Stack:**
+    *   **1. Dominant:** We know this is **Ni** (introverted).
+    *   **2. Auxiliary:** The stack must alternate orientation, so this must be extraverted. It must also be the other preferred letter, T. So, the Auxiliary is **Te**. This matches our J/P rule.
+    *   **3. Tertiary:** This function must be the opposite of the Auxiliary's function type (the opposite of T is F) but share its orientation (introverted, like the Dominant). So, the Tertiary is **Introverted Feeling (Fi)**.
+    *   **4. Inferior:** This function must be the opposite of the Dominant's function type (the opposite of N is S) and have the opposite orientation. So, the Inferior is **Extraverted Sensing (Se)**.
+
+5.  **Final INTJ Stack:**
+    *   Dominant: **Ni**
+    *   Auxiliary: **Te**
+    *   Tertiary: **Fi**
+    *   Inferior: **Se**
+
+This resulting stack (**Ni, Te, Fi, Se**) contains one of each function type (N, T, F, S) and alternates in orientation (i, e, i, e), perfectly following the rules.