An engineer would say woodpecker brains and human brains are built from the same material, but the mathematics of scale mean that bird brains can take a bigger banging.

工程师会说啄木鸟的大脑和人脑是用同一种材料制造的，但是数学中的比例概念意味着鸟的大脑可以承受更大的撞击。