神奇数字150表明，我们社交网络的规模受限于大脑的容量。
The magic number 150 suggests that the size of our social networks is limited by the size of our brains.
Investing in local communities isn't charity—it's smart business.
故事是一种表达无法用其他方式表达的东西的方式。
设计的优雅来自于以正确的方式解决正确的问题。