english: 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.
non_english: Stephen Petranek: Het leek me nogal fantastisch maar na wat nadenken, begon ik ze serieus te nemen. En toen kwam 9/11. Ik dacht: “Ach God, ik kan op de TED-conferentie niet gaan praten over hoe de wereld gaat vergaan.