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.
Tajā laikā izmira dinozauri. Tajā laikā izmira  75% dzīvnieku un augu sugu, un tajā laikā zīdītāji ieņēma  savu ekoloģisko nišu. Antropomorfizējot bioloģiskā evolūcija teica: "Hm, šī smadzeņu garoza  ir diezgan laba lieta," un sāka to palielināt.