3. It took almost 45 years for this 13-hour shaggy-dog experiment to reach American screens, but the timing turned out to be perfect. Mr. Rivette’s mischievous ramble through Paris, French literature and a handful of perennial philosophical puzzles (What is the nature of reality? How do we know what we know? What is the relation of effect to cause?) is both a charming, newly rediscovered artifact of its hectic time and a bulletin from the cinematic future. Everything has already been done, and everything is still possible.