How to Be Persistent in Asking

"I'm a rational optimist in that i expect lots of problems, but i expect that we will be able to tackle them through discovery and invention," he says. "Knowing how little you know is really, it just, it's such a freeing in because what happens to a lot of people, i think, is they become prematurely certain about everything,. right? I sit, many of those thoughts probably came from your friends in grade school, from your parents, from your brothers and sisters."