Jan Lecun believes OpenAI's Sora approach using generative models, focused on generating pixels, is ill-suited for simulating the world. He argues that the complexity of dealing with uncertainty in high-dimensional continuous sensory inputs makes generative models for sensory inputs likely to fail, contrasting their effectiveness in handling text data. Lecun and Meta propose their own approach, the video join embedding predictive architecture (VJPA), as an alternative solution to this problem.

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