随机评估可以帮助我们了解发展中哪些措施有效,哪些无效。
Randomized evaluations can help us understand what works and what doesn't in development.
Never underestimate the power of incremental improvements.
文学是语言的艺术,而语言是沟通的艺术。
我总是被那些复杂和有缺陷的角色所吸引。
我不喜欢平庸。
The historian is a prophet looking backward.