Stephen Petranek: At first, it all seemed a little fantastical to me, but after challenging a lot of these ideas, I began to take a lot of them seriously. And then September 11 happened, and I thought, ah, God, I can't go to the TED conference and talk about how the world is going to end.
一开始我并不相信什么世界末日的，但通过对许多可能性的质疑， 我慢慢地开始严肃地对待它们。之后，911事件发生了， 我想，天呐 我怎么能去TED