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For the design of the mechanism, the ability to customize the linkage to create different patterns and robustness of the mechanism as a whole complexity of said patterns were my primary concerns. I also wanted the mechanism to be as simple as possible to build, so that troubleshooting errors later on would not be complicated. I would consider the project a success if the mechanism is able to create several different interesting curves, with an added bonus being that the curves it creates matches those predicted in a simulation of the mechanism.