Sometimes, the best solutions to complex problems are simple. But simple doesn't always mean easy. This hour, TED speakers describe the innovation and hard work that goes into achieving simplicity.

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Tags:  TED radio hour,  problem solving,  Mileha Soneji,  Sam Kass,  Wendy Troxel,  Myriam Sidibe,  Amos Winter,  parkinsons disease,  sleep deprivation,  hygiene,  all-terrain whellchair,  meal plans,  low income schools