Natural experiments are a powerful tool for understanding causal relationships in the real world.
电影应该是一种自由的表达,而不是商业的奴隶。
作家必须是一个永远的异见者,一个职业的异端。
每本书都是一次旅程,每次旅程都是一本书。
Innovation in database systems is not just about speed, but also about adaptability and scalability.