人类历史是在对比意识的作用下经过不间断的甄别、选择、扬弃和变革向前推进的。当北京猿人从野火的灰烬中拾起烧熟的野兔、雉鸡品尝时，味觉的比较使他们摈弃了茹毛饮血的旧习惯，从而学会了火的运用，促进了大脑的发育；当山顶洞人运用圆木的滚动搬运巨大的石块时，效率的比? Human history has progressed through uninterrupted screening, selection, sublation and change under the influence of comparative consciousness. When the Peking Man picked up the cooked rabbits from the ashes of the wildfires and compared the tastes of the pheasants with taste, they abandoned the old habit of using the rum and blood to learn the application of fire and promoted the development of the brain. When the cavemen applied the circle The efficiency of the wood than when rolling large stones?