For a background on how the brain really works see The Even More Astonishing Hypothesis!
According to Out of Africa as "pygmies" and back as global "mongoloids" human evolution was a dead end until they got the chimp gene for a better packed brain. And originally chimps got it because they had to shrink their size in the jungle whithout loosing processing capacity! This view is well supported by a recent Japanese study. "There are still many people, including many biologists, who believe that humans are superior to chimpanzees in all cognitive functions," said Tetsuro Matsuzawa, of Kyoto University. "Here we show for the first time that young chimpanzees have an extraordinary working memory capability for numerical recollection - better than that of human adults tested in the same apparatus, following the same procedure."Furthermore, also adult chimps performed well and Ai, a female, had a short time memory capability equal to that of adult humans.Klevius comment: That youngsters may perform better than adults in certain tasks doesn't need to be considered a surprise. Nor the fact that chimps "outperform" humans. However, overall the results fit perfectly well into my hypothesis precisely because it places the chimps very close to human brain capacity when correcting for difference in size. Homo Floresiensis (the ape-like dwarf found in Islamic Indonesia and there causing the worst scandal since Piltdown - incl. a Muslim professor stealing and partly destroying valuable material), who had a chimp-size brain but performed tasks associated with e.g. Homo erectus, with more than double the brain volume, can only be reasonably explained by this (see postings on the anthropology blog and the main page).
And pedagogical brainwashing is, of course, always a troublesome distortion in this kind of analysis!
Talking abt brainwashing - ALSO VISIT THE MOST REVEALING INFO ON THE WEB WHEN IT COMES TO THE ORIGIN OF MOSQUE/MADRASSA!