Marc Raibert: belief

Transcript context

…Is there something to be said about needs that go forward versus backward? Sure. There’s this idea called passive dynamics, which says that although you can use computers and actuators to make a motion, a mechanical system can make a motion just by itself if it gets stimulated the right way. So Tad McGeer, I think in the mid 80s, maybe it was in the late 80s, started to work on that. And he made this legged system that could walk down an incline plane where the legs folded and unfolded and swung forward, do the whole walking motion where there was no computer. There were some adjustments to the mechanics so that there were dampers and springs in some places that helped the mechanical action happen. It was essentially a mechanical computer. And the interesting idea there is that it’s not all about the brain dictating to the body what the body should do. The body is a participant in the motion. So a great design for a robot has a mechanical component where the movement is efficient even without a brain?…

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