大約就是在距今7萬到3萬年前，出現了新的思維和溝通方式，這也正是所謂的認知革命。會發生認知革命的原因為何？我們無從知曉。得到普遍認可的理論認為，某次偶然的基因突變，改變了智人的大腦內部連接方式，讓他們以前所未有的方式來思考，用完全新式的語言來溝通。
A new mode of thinking and communication emerged about 70,000 to 30,000 years ago, which is the so-called cognitive revolution. The reasons for the event have not yet been known. According to a generally accepted theory, an accidental genetic mutation likely happened and changed the internal connections of Homo sapiens' brains, allowing them to think in an unprecedented way and communicate with a completely new language.
