"Matching methods can be a powerful tool when randomization is not possible."
当随机化不可行时，匹配方法可以是一个强大的工具。
股市不是赌场，但如果你把它当作赌场，它就可以是。
体育教育的目标是发展完整的人，而不仅仅是他的肌肉。
Reflection is not the evil. The evil is the state of reflection, and the stasis that comes with reflection.
When making something， always get a few extras — extra material， extra parts， extra space， extra finishes. The extras serve as backups for mistakes， reduce stress， and fill your inventory for the future. They are the cheapest insurance.
Overfishing is a problem we can solve—if we act now.