God only rarely reveals the future. When he does so, it is for one reason: it's a future that was written so as to be altered.

晏子春秋

生产过程的透明度能建立与消费者和利益相关者的信任。

最好的尚未到来。

从n对观测值的样本中获得的相关系数的可能误差是sqrt((1-r²)/(n-2))。