Thomas Edison is probably best known for creating the light bulb but he invented much more than that: the phonograph, stock ticker and first movie camera. He registered 1093 patents but focused his efforts on inventions that had market potential.
When he invented the movie camera, he remarked that he was going to do for the eyes what the phonograph did for the ears. Actually, cognitive experts say that often invention comes from seeing parallel similarities.
“The bridge that allows us to come up with new ideas is usually an analogy: a way of looking at two things in your memory or in the world and seeing the similarity in their underlying structures.” Business Insider on Thomas Edison
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