Sine Qua Non: The Psychology of Big Wave Surfing with Greg Long (2012) (movie): The Inertia is proud to announce the launch of our new documentary film series, which aims to tell the best stories in surfing. Period. The first, 24-minute episode provides an intimate portrait of the mentality, risks, and lifest... Discover the latest Discussions, Reviews, Quotes, Theories, Explanations and Analysis of Sine Qua Non: The Psychology of Big Wave Surfing with Greg Long (2012) below