And yet, in two million years, the human brain has nearly tripled in mass, going from the one-and-a-quarter-pound brain of our ancestor here, Habilis, to the almost three-pound meatloaf everybody here has between their ears.
호모하빌리스의 뇌는 1.25 파운드였는데요. 여기 계신 여러분들의 뇌는 3 파운드나 됩니다.