Inbreeding in itself does not always reduce IQ; IQ is a much more cultural factor. Studies on monozygotic twins prove this: if you took two twins born in deep Africa, from the worst society you can imagine with an average IQ of 70, and you left one with his native population, he would behave like the average. If you took the other to a Western democracy, he would end up with the average 90-100 IQ that our education enforces.
Inbreeding creates homozygosity in both desirable and undesirable alleles; therefore, practicing it in humans is not a game, and you will only "win" in a small percentage of cases. That is why it is often accompanied by polygamy—to have more "bullets" in the chamber.
These are techniques that have always been practiced in livestock for food, or horses and dogs destined to assist humans. Without inbreeding, you cannot fix certain traits. No sane person is going to breed 10 specimens with high rates of inbreeding just to keep one superior specimen while having to sacrifice nine that turn out with defects. To create a Border Collie, nature would have taken 50 million years; modern humans did it in 500. With CRISPR, in 10 years you can take the alleles of an Arctic Wolf from 10,000 years ago, gestate them in a modern female wolf, and sell them as the wolves from Game of Thrones.
Animal breeds did not forge themselves; there is much more genetic engineering involved than common people think (and much more than semi-professional breeders understand).
"Race," in the classic concept always understood in humans, consists of two main inseparable parts that feed back into each other (ethnicity + culture):
1. Ethnicity (Being-Hardware): Formed by the combination of autosomes from the entire family tree over the last 32 (4 generations) to 64 (5 generations) ancestors. (In lines from the 5th generation onwards, only 1-3% is inherited, and we have "soldiers" via inbreeding representing 2-4% of non-sapiens races; therefore, anything below 5% is negligible).
2. Culture (State-Software): Language + ethical-moral rules (Religion and applied sciences).
The problem never resides in ethnicity; it resides in culture—in how you spend every second of your time on a daily basis.
Racism mixes both things; xenophobia, by contrast, is an abstract survival instinct to prevent your descendants from suffering female genital mutilation.
The Flynn Effect already proved that a culture, in less than a century, can increase average IQ by 30 points.
It is Islam that fixes IQ at 80; one only needs to read the Quran to understand it. They are an ethno-military doctrine with a base structure designed to disproportionately multiply the Ishmael haplogroup (FGC1723>). This is why polygamy and pedophilic marriages are permitted—to reproduce as quickly as possible in the shortest amount of time. Under Sharia, a 9-year-old girl (or once she begins her period) is already an adult before the law because she can already be used to breed faithful followers for the cause.
Polygamy serves to have a wider variety of cousins with FGC1723 consanguinity, thus allowing one to choose how to mix the lines and avoid repeating documented defects. If your father died of a heart attack at 40, you won't mix with your beautiful cousin whose father (your uncle) also died of a heart attack at 40 (though if you can have three wives, you do it anyway). Instead, you also mix with your "ugly" cousin—also your paternal grandfather’s granddaughter—whose father is also FGC1723 from another clan and lived without heart problems until 90. Thus, if your main, "purer" lineage with more consanguinity in your branch does not survive, the second one does. In Islam, not having a male heir is to fail Muhammad.
Islam strictly treats women as livestock with the goal of dominating a specific lineage.
Founder effects are not born by chance or out of thin air; they arise from meticulous genealogical records linked to the strict exercise of certain cultures that, for all practical purposes, are genetic engineering.
Inbreeding multiplies what is already there. If you perform consanguinity in lineages with a 130 IQ, the associated neurological alleles are consolidated. If you do it with 80 IQ lineages suffering from personality disorders, you consolidate oligophrenia, Borderline Personality Disorder, and other neurological disorders due to unwanted homozygosity.
Forcing inbreeding to create a savant is not the same as creating an oligophrenic. One serves as a human calculator despite being limited in other functional and social aspects; the other requires you to wipe their backside after they defecate. Both have defects, but they are nothing alike.
The Gypsies also practice the same degrees of inbreeding as Muslims, and despite being "oligophrenic" in abstract reasoning (as they are not schooled), they possess rhythmic and melodic virtuosity. IQ tests only measure raw power in Western abstraction, not functional abstraction. We have thousands of cases of elite footballers who, at an academic level, would be considered oligophrenic, but at a psycho-spatial functional level, their brains operate at a performance of 160-200 IQ (e.g., Vinicius Jr., Sergio Ramos, Leo Messi). We also have cases of savant geniuses with 200 IQ who have made no scientific progress and have lived martyr-like lives due to atrophied emotional intelligence. Poor Newton, for instance, died a virgin.
Oligophrenia is cured by reading—but not by reading the Quran. It is cured by reading and understanding what is empirically demonstrable within the associated space-time context. Letters were always a simple derivative of numbers; one must understand what the numbers say, not the letters.
Inbreeding in Islam only reinforces social position, creating great average inequality; much of the population verges on oligophrenia while a chosen few hoard elite positions, such as the invading Shiites in Iran or the King of Morocco. This inequality is calculated to the millimeter.
Nothing can be done to remedy it (except Crusades); their book was written by an illiterate, schizophrenic pedophile and not a single comma can be modified, or they will cut your tongue out. Therefore, they will remain slaves to a small elite until they renounce it.
The most drastic example of cultural illiteracy affecting functionality occurs with Moroccans: despite having only about 10% Arab-origin lineages, they generally claim to be "pure Arabs." This is a severe identity problem that leads them to be highly conflictive in democratic societies. There is a viral video of the King of Morocco from years ago warning that they would never integrate in France, and he was spot on. But Western progressives refuse to understand that Islam is a strictly racist, classist, and oppressive religion, totally incompatible with Western democracies and cultures.
IQ is much more malleable in adulthood than people think. The idea that certain ethnicities are associated with a specific IQ is an Anglo-Saxon invention, a legacy of scientific racism. IQ is multifactorial and epigenetic, but what carries the most weight are the sciences that inhabit each culture.
Ethnically, all sapiens are the same "dog breed"; we are practically clones at a species level. If we traveled to 200,000 BC to get an archaic Sapiens cub and brought him to the present, he would not be cognitively different from current populations due to the tremendous "inbreeding knot" we’ve had over the last 200,000 years. That inbreeding knot ensured that every current sapiens is designed for an innate hardware of 100-140 IQ, and God is not responsible for the software side effects dictated by schizophrenics thousands of years ago.
Cultures are always practiced by specific ethnicities, so it is impossible to separate IQ from ethnicity. However, the oligophrenia of certain ethnicities does not reside in the ethnicity itself, but in the vices of the culture and its "software."
A Protestant Anglo-American from the year 1700 would tell you that enslaving E-M2 is fine because predestination is God's work and He made them "dumber."
Isabella the Catholic, in 1500, already told you that Q-M3 had souls and were also children of God.
In Islam, epigenetics does not exist. Abstract reasoning is an offense against Allah; simply to reason is to attack Allah. All totalitarian regimes focused on submission gift their "sheep" with an 80 IQ.
Prohibiting inbreeding is practically prohibiting several cultures, such as the Gypsies or Islam. Gypsies are Gypsies because they maintain more than 50% of the H-M82 haplogroup; if they stopped practicing it, in a few generations their haplogroup would go extinct or be absorbed by the dominant groups of the area, and they would cease to be Gypsies. In Spain, we have nearly 800,000 Gypsies and about 200,000 Mercheros (Quinquis, who are culturally patriarchal), which corresponds to the 2% indicated in the tables.
In the case of Judaism, inbreeding is more cultural than ethnic because they have four different patriarchal haplogroups in similar percentages. Islam, however, is designed to favor one specific lineage.
Therefore, prohibiting inbreeding... is a racist act because—surprise—the ethno-cultural groups that practice it do so because they are strictly racist.
In any case, Islam should be prohibited, at least in the West.