1. Will Mars be a vacation spot or a factory town in 100 years?
  2. How much total value is there in the world?
  3. Why does my cat make sounds whenever he sees a bird, even though he's never actually had another cat teach him how to hunt?
  4. How much time do we spend looking at loading websites over our lives?
  5. How deep of a hole could I dig in 24 hours
  6. Are there such things as radio frequency lasers? Could we use that to power space ships?
  7. How would you build a machine to summon lightning?
  8. Do the laws of physics change?
  9. What if there's not actually a fundamental theory of everything
  10. What's the next writing implement of the future