黑暗森林法则
Dark Forest Rule
宇宙就是一座黑暗森林，每个文明都是带枪的猎人，像幽灵般潜行于林间，轻轻拨开挡路的树枝，竭力不让脚步发出一点儿声音，连呼吸都必须小心翼翼：他必须小心，因为林中到处都有与他一样潜行的猎人，如果他发现了别的生命，能做的只有一件事：开枪消灭之。在这片森林中，他人就是地狱，就是永恒的威胁，任何暴露自己存在的生命都将很快被消灭，这就是宇宙文明的图景，这就是对费米悖论的解释。 　　被发现，即被毁灭！
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Our universe is a dark forest,every civilization is a huntor carrying guns walks secretly in the forest like a ghost ,he softly pushes the branches aside and tries his best to avoid any sounds under his foot as well as breathing carefully.He must be catious for the reason that there are others walking like him in the forest.If he finds any life, then the only thing he will do is to shoot and kill it.In this forest,other men are hell that means they are perminent threat,any life expose themselves will be destoryed,that is the image of outer civilization,the explanation to the Fermi paradox.Scarecely had been detected,you were destoryed!