translation.en: 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.
translation.zh: 科学研究方面， 神经学长久以来的这种说法 认为当大脑超过 四到五岁时 将会失去学习能力 我并不赞同 因为我不觉得此理论 有广泛的实践基础