It's a quantitative expansion of neocortex, but that additional quantity of thinking was the enabling factor for us to take a qualitative leap and invent language and art and science and technology and TED conferences.
不同在于大脑皮层的伸展， 但那额外的思考 是我们能够飞跃的启动因子， 并因此发明了语言、艺术、科学 艺术，科学和科技 还有TED会议。