Blind adventurer Erik Weihenmayer takes on an absurdly improbable challenge: kayaking the Grand Canyon. He desires the elusive state of being that so many of us seek, to be engaged in the present moment. “It’s so hard to be fully in the moment,” Weihenmayer muses, “because there’s so much fear, there’s so much anxiety, it’s like a person looking through a window at an experience rather than being in the experience.”