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The history of mathematics is a history of human curiosity and ingenuity.
过去从未消逝,它甚至还没有过去。
The idea that we will make a society where literally everybody is graded, the good at the top, bad at the bottom, exactly done as it should be, is impossible. There are simply too many random factors: accidents, accidents of birth, accidents of things dropping on people's heads, illnesses, etc. We will never get to grade them, never get to grade people as they should.
Bidders in an auction are like players in a game—the rules shape their strategies.
The coal industry must deepen supply-side structural reforms and improve supply quality.