原文是付费文章，所以不贴网址了。
以下是节录:
朋友从屋顶摔下来发出巨响。John Danks离开电脑往外看
了看，觉得不严重就和他的朋友回去住处睡搞搞。并没有
做出帮助关心朋友的举动，更没有叫救护车。现在他这
个伤势不严重的朋友以后可能不能正常行走了...
Suddenly, Danks heard a "loud bang."
He looked away from his computer and saw his friend, 29-year-old Blake Papst, lying nearby on the wooden deck. Papst, who was standing on a roof above the deck with his brother, had fallen about 10 feet.
What followed immediately is in dispute but everyone is clear on one detail: An ambulance was not called. Instead, Danks and his two friends eventually went to sleep inside the condo, leaving Papst alone on the deck.
"He didn't act like he was very hurt," Danks later testified, according to court papers. "I mean, he almost acted like he got the wind knocked out of him more than anything."
But Papst was seriously injured; he has not walked again.