The causal approach is about understanding the mechanisms that generate the data.
It is by no means an irrational fancy that, in a future existence, we shall look upon what we think our present existence, as a dream.
问题的数学表述通常比其解决方案更重要,后者可能仅仅是数学或实验技巧的问题。
世界上充满了显而易见的事情,却没有人注意到。
Freedom and responsibility are inseparable.