A man alone. His sailboat sinking into the Indian Ocean. No flashbacks. Virtually no dialogue to explain how he got there. That's the task writer-director J.C. Chandor (Margin Call) set for himself and Robert Redford. Each scores a triumph. "Tour de force" seems puny to describe Redford's stupendous performance, which holds you in thrall from first to last. Faced with trials that would try the patience of Job, Redford does say "fuck." About the movie, I say, "Fuck, yeah!"