Yesterday, I got to meet Greg Mortenson, who was just nominated for the Nobel Peace Prize for the amazing work he's done building schools in Afghanistan and Pakistan. I was explaining to Zach about how Greg's failed attempt at climbing K-2 resulted in his achieving the far bigger mission of bringing schools to kids who didn't have them. But Zach was more interested in Greg the mountain climber:
Zach: Why didn't he get to the top?
Betsy: Well, it's really hard to climb a mountain. Your body has to be strong and healthy, the weather needs to be right...
Zach: Well, do you know what I'm going to build? I'm going to build something so the weather doesn't have to be perfect to climb to the top. It's a really, really, really, really, REALLY big ladder that goes past the sky. And it's for if you need to get to a cloud or if you miss your rocket ship, you miss the take-off time, or if you miss your plane. It's for going to all those stuff. Or climbing the mountain. It's HUMONGOUS! But it's really, really, really....tight. So anybody can carry it. Kids can carry it, grown-ups can carry it...
Betsy: Do you mean it's very, very light?
Zach: Yeah, light. And now I want to tell you about one more machine I'm going to build. But I'm definitely going to build that ladder...