The tree of life forms a concise snapshot of the history, and linkages between, all life forms on Earth. Another way to look at this diagram is to imagine what the world would have been like if history had played out differently. If the evolutionary game was run again, how would the same fundamental building blocks have combined, given different selective pressures and exogenous shocks? This research question exists at the intersection of evolutionary biology, engineering, and design, and over the last few years I have begun to ponder the question when set in the context of robotics. We (my research group and colleagues from around the world) are seeking  to answer this question with the aim of challenging existing notions of what robots are, how they are designed, built, and controlled, and how they interact with their environment. We ran a workshop on this topic at the 2024 IEEE International Conference on Robotics and Automation (ICRA) conference in Yokohama and you can find the...

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