In 4th grade Philip made his classmates sit through a show-and-tell of a working analog computer he had built inside a cardboard box. He’s been building products and companies ever since. At 17 he started a database software company, which put him through college at the University of California, San Diego, where he earned a BS in Physics. In 1995 he built FreeVue, an innovative video conferencing application, which he then sold to RealNetworks, where he created RealVideo and became Vice President and CTO. In 1999, inspired by the rise of broadband and powerful 3D graphics, he returned to San Francisco and founded Linden Lab to create Second Life, pursuing the lifelong dream of creating an internet scale virtual world. Beyond Second Life, Philip co-founded and has been working on Coffee & Power, which uses mobile technology to enable people to help others nearby with their work. He is also fascinated by the challenge and future of using networked computers to simulate the brain.