How I helped make Lego accessible to the blind

As a child, entrepreneur Matthew Shifrin received a gift that changed his life -- a Lego set with instructions hand-written in Braille. In this charming and personal talk, he tells the story of his years-long mission to share the sensory experience he remembers with the larger blind community. "If there's something you're passionate about and you want to spread that passion," he says. "Give it to those who would otherwise be unable to access it."