"The great advantage of being a writer is that you can spy on people. You're there, listening to every word, but part of you is observing. Everything is useful to a writer, every scrap, even the longest and most boring of luncheon parties."
分散投资仍然是金融中唯一的免费午餐,但它需要的不仅仅是持有大量股票。
复杂性理论告诉我们,并非所有问题都是平等的;有些问题本质上比其他问题更难。