Chris Walker dropped out of Dartmouth and became a Thiel Fellow in 2013.  He had an idea for a math video game that was inspired by the TI 84 graphing calculator.  He tried creating an educational video game studio but it didn't work out.  He joined Hack Club, a student-led educational intiative that started teaching coding but has branched out.  Hack Club's founder, Zach Latta, was also a Thiel Fellow.  

Chris started Castle Bravo as a personal project -- with the idea of turning a bouncy castle into a boat -- a motorized floating bouncy castle.  He's now working with young people to create a solar-powered version.  Chris will bring the current version to Maker Faire Bay Area

https://make.co/make-cast/