Being able to jump off a swing is actually a useful and meaningful thing for a child to do... those are the tests that help us understand the limits of our body. That's a positive learning experience that we deny children on a regular basis.

When we protect children from every possible source of danger, we also prevent them from having the kinds of experiences that develop their sense of self-reliance, their ability to assess and mitigate risk, and their sense of accomplishment.

I'm a contract computer scientist by trade, but I'm the founder of something called the Tinkering School. It's a summer program which aims to help kids to learn how to build the things that they think of.

Kids who grow up in radically different environments are always going to have different comfort levels with regard to a topic. If you don't live near a train track, it's hard to squash a penny that way, and if you live in an apartment in New York City, it may be difficult to get to drive a car.