Mankind is a bloodthirsty species. According to Steven Pinker, the academic, for much of history being murdered by a fellow human was the leading cause of death. Civilisation is largely a tale of man’s violent instincts being progressively muffled. A part of this is the steady withdrawal of actual human flesh from the battle zone, with front lines gradually pulled apart by the advent of long-range artillery and air power, and the decline in the public’s tolerance for casualties.
人類是一個嗜血的物種。根據學者史蒂文•平克(Steven Pinker)的說法，在歷史的大部分時間裏，被同類所殺是人類的頭號死因。文明基本上是人的暴力本能被逐漸束縛住的故事。其中一個部分是有血有肉的人持續從戰場撤出，前線逐漸被遠距武器和空中軍事力量拉遠，公衆對於傷亡的容忍程度也下降了。
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