An excerpt from Brain Power: From Neurons to Networks , a new film and TED Book from Tiffany Shlain. In 2008, my father was diagnosed with brain cancer. During his illness, I began to think a lot about time, how little of it we have, and how connections are meaningless unless we connect deeply. But this requires attention and being present. When I was with my father, I didn’t want to be distracted, so I would turn off my cell phone. Later, my husband Ken and I decided to do something we’d been trying to do since we’d met: institute one day a week where we turn off the technology in our lives...