Gever Tulley — American Writer

Gever Tulley is an American writer, speaker, computer scientist, and founder of the Brightworks School and Tinkering School. His most recent work centers around the concept of students learning through building projects. He has delivered a TED talk on his work, published the book 50 Dangerous Things, and has contributed articles for many online media outlets... (wikipedia)

Persistence and resilience only come from having been given the chance to work though difficult problems.
The evolution of playground equipment has been to this ever safer, less challenging, less interesting assemblies of equipment.
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.
Pocketknives are kind of drifting out of our cultural consciousness, which I think is a terrible thing.
The idea that we can make all things safe for all behaviors is in itself a dangerous and slippery slope.