The ribbon is actually a functional belt drive. It starts with spinning one animal/spindle, then builds up to spinning all five at once, the way a belt drive wo

The ribbon is actually a functional belt drive. It starts with spinning one animal/spindle, then builds up to spinning all five at once, the way a belt drive would. For more info:http://www.theatlantic.com/technology/archive/12/09/can-a-kids-toy-bring-more-women-into-engineering/262373/ http://www.theatlantic.com/technology/archive/12/09/can-a-ki...