That's when the dinosaurs went extinct, that's when 75 percent of the animal and plant species went extinct, and that's when mammals overtook their ecological niche, and to anthropomorphize, biological evolution said, "Hmm, this neocortex is pretty good stuff," and it began to grow it.
これは恐竜が絶滅し 動植物の75%が 絶滅した時です そして哺乳類が絶滅種の ニッチを埋めた時でもありました そして「生物学的進化」さんは こう言いました 「この大脳新皮質っていいね」 そしてそれを育て始めました