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Small World Models - by Ben Recht - arg min

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How much do you need to know about a system to control it?

Small World Models How much do you need to know about a system to control it? Ben Recht Mar 16, 2026 30 3 2 Share This is a live blog of Lecture 6 of my graduate seminar “Feedback, Learning, and Adaptation.” A table of contents is here . The backbone of control engineering is the assumption of a reasonably reliable, reasonably simple dynamical system with inputs and outputs. We have to believe that the behavior of the thing we want to steer is consistent enough so that whatever we design in the lab will work on the road. Now, what exactly do I need to know about this reliably consistent dynami

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