A. Incest (Too Similar)
- Problem:
- Recessive disorders (hemophilia, cystic fibrosis) skyrocket.
- Weakens immunity (limited genetic diversity = vulnerable to diseases).
- Historical Response:
- All cultures banned it (even royals who tried it died out or degenerated).
*B. Race-Mixing (Too Different)
- Problem:
- Disrupted genetic cohesion (traits evolved for different environments clash).
- Cultural/ethnic erosion (no strong tribal identity).
- Historical Response:
- Tribes stayed endogamous (same race, different clans).
2. The Optimal Middle (Same Race, Different Ethnicity)
Example*:
- Germans + French (both European, different sub-groups).
- Iranians + Pakistanis (both West Eurasian/Caucasian, different cultures).
- Japanese + Koreans (both East Asian, distinct ethnicities).
Benefits:
Genetic Health:
- Diverse enough to avoid inbreeding depression.
- Similar enough to maintain adaptive traits (e.g., Nordic cold resistance, East Asian lactose tolerance).
Cultural Stability:
- Shared racial foundation = easier assimilation, stronger nations.
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3. Why Race Matters More Than Ethnicity
- Skin color, skull shape, bone density are surface markers of deeper evolutionary adaptations:
- **Sub-Saharan Africans**: Malaria resistance (Duffy-negative blood).
- **Northern Europeans**: Vitamin D efficiency (pale skin).
- **East Asians**: Alcohol flush reaction (ALDH2 gene).
- **Mixing races = mixing incompatible adaptations**.
**Example**:
- **European + African couple**:
- Child gets **sickle-cell trait** (African) but **no malaria** (European environment).
- **Result**: Harmful mismatch.
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### **4. What History Shows**
- **Strongest civilizations** (Rome, Persia, China) allowed **ethnic mixing within their race** but **blocked foreign racial mixing**.
- **Collapsing empires** (Late Rome, Modern West) embraced **racial chaos** **dysgenic decline**.
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**Final Rule**
- **Same race?** Mix ethnicities freely.
- **Different race?** **Don’t.
