原文见这里：

Using code examples in professional software development is like teenage sex. Those who say they do it all the time are probably lying. Although it is natural, those who do it feel guilty. Finally, once they start doing it, they are often not too concerned with safety, they discover that it is going to take a while to get really good at it, and they realize they will have to come up with a bunch of new ways of doing it before they really figure it all out.