Например в иврите отсутствует однозначное и ясное кодирование гласных звуков, что осложняет структурированное мышление и сказывается на интеллектуальном уровне людей, использующих этот язык в качестве родного. Cited from: A. Poleev. Basic elements of language. Enzymes, 2020. http://enzymes.at/download/elements.pdf

Missing citations: So far as physical health is concerned, he has examined the top 1 percent for mathematical ability among approximately 100,000 tenth grades and found that the mathematically gifted boys and girls had a higher incidence of myopia (short sightedness). Apart from this they tended to be more healthy than average. Cited from: Lubinski, D., Humphreys, L.G. Some bodily and medical correlates of mathematical giftedness and commensurate levels of socioeconomic status. Intelligence, 1992, 16: 99-115.

An important consideration in determining the validity of a myopia-high intelligence association is the factor of ethnicity. As cited by Miller, intelligence and myopia do appear to covary amongst ethnic groups, thus yielding a risk that correlations observed within populations reflect primarily ethnic effects. While discussing the intelligence of different ethnic groups may be highly controversial, some authors have observed that higher intelligence test scores tend to be recorded amongst the Chinese, Japanese, and Jews—who have high incidences of myopia—than other races such as Gabon Negroes and Eskimos, who have much lower rates of myopia. While there may be many reasons for this discrepancy and it is imprudent to suggest that actual differences in intelligence levels exist amongst races, at the very least, this observation does cast a question-mark over how real the association is between myopia and high intelligence in the general population, as compared to an ethnically stratified subpopulation basis. ... Not all studies investigating the potential link between myopia and high intelligence have demonstrated a significantly positive correlation between these two factors. … Ong et al. found in recent Singaporean study of 1032 patients aged 60–79 years that those with refractive errors (both corrected and uncorrected), including myopia and hyperopia, were significantly more likely to have cognitive dysfunction after correcting for demographic and educational factors. Cited from: Verma A, Verma A. A novel review of the evidence linking myopia and high intelligence. J Ophthalmol. 2015:271746.

Die Methoden der Bildung, die zur Debildung regrediert wurde, tragen zur Vermehrung der Invalidität bei, indem sie versucht, vorgefertigte Schemen in die Köpfe der Kinder zu pressen, anstatt sie von natürlichen Formen und Abläufen inspirieren zu lassen, sowie mittels Textbücher zu belehren, anstatt in erzählerischer Weise das Wissen zu vermitteln. Je mehr solche Kinder „lernen“, desto blöder werden sie, wie statistische Daten bestätigen (Mirshahi et al., 2014; DOG 2015; European Eye Epidemiology Consortium, 2015a, 2015b). Cited from: A. Poleev. Metaanalysis of psychoanalysis. Enzymes, 2016. http://enzymes.at/download/psychoanalysis.pdf