Eureka!!: WhatsApp , Jan could not call his father in Russia, it's too expensive. so he made a free internet calls., Sewing machine. Howie had a nightmare of himself being stabbed. He noticed the knives in his dream had holes in the top, and realized this could be used in sewing machines., Bendy straw, Friedman took his baby daughter out for a treat at a milkshake shop. She was struggling to reach the top of the straw, so he bended it to her so she could drink. surprised by the usefulness of the design, he then made the invention., nope: Jane won a million dollar by participating in a contest., MacDonald's, Ray Kroc wanted to build a restaurant that would be famous for making food of high quality and uniform methods of cooking.,

Eureka!

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