english: Scientific reason is that this notion from neuroscience of critical periods -- that if the brain is older than four or five years of age, it loses its ability to learn -- that doesn't sit well with me, because I don't think that idea has been tested adequately.
non_english: Naučni razlog leži u ideji neuronauka o kritičnom periodu, da ako je mozak stariji od četiri ili pet godina, on gubi sposobnost učenja. Ne mogu da prihvatim ovo jer smatram da ideja nije adekvatno ispitana.