I am Wenbo Ji, a second M.Sc. student at TUM working on video diffusion, world models, and robotic manipulation. I write about research, work, and lasting thoughts.
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From π0 to π0.7: A Tutorial on Open-pi and Robot Foundation Models
A tutorial-style reading of Physical Intelligence's open-pi line, explaining how VLA robot policies turn language into action, generalize through richer context, and become steerable through experience, memory, and world-model-generated visual subgoals.
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Work Is Important Enough Not to Become Everything
A reflection on Simone Stolzoff's The Good Enough Job, and why work should be allowed to matter without becoming the whole measure of a life.
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The Age of Auto Research, and Other Certainties
A reflection on auto research, AI scientist systems, and why automated local search makes human problem framing and research taste more important rather than obsolete.
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On 3D, Video World Models, and the Approaching ImageNet Moment of Perception-Action Learning
How can perception-action learning reach its own ImageNet moment, and what role might 3D and video world models play in building causal, physically accurate representations of the world that are useful for action?