Pierre-Yves Oudeyer has created several robots to understand how newborn mechanisms can learn. Our brains and our hands are used to fabricate and model the things we want to understand. In his TEDx Talk Fabricating open-source baby robots, Oudeyer explains that scientists also use fabrication to build new knowledge of the world around us. Scientists build large scale aquariums to understand ocean behavior and construct large computer simulations to understand spiral galaxies. The idea o