要得到饼干,就得冒险。
"You gotta risk it to get the biscuit."
If you want to get smart, the question you have to keep asking is 'why, why, why?'
在没有其他信息的情况下,参数的最佳估计是其样本值。
当下是转瞬即逝的时刻,已经在成为过去。