The beauty of instrumental variables is that they allow us to see the world in a new light.
最成功的组织是那些专注于为所有利益相关者创造价值的组织。
过去并未死去;它甚至还未过去。
我会继续用音乐传递爱与希望。
Success is a function of persistence and doggedness and the willingness to work hard for twenty-two minutes to make sense of something that most people would give up on after thirty seconds.
设计良好的市场能最大限度地减少策略操纵的机会。