via popsci.com
After two decades as an electrical engineer, Randy Sprague quit his job in 2008 to start a solar power company. He had been planning the venture for years, saving up, getting his wife’s blessing. But then one morning while taking a shower, he had a brainstorm for an entirely different idea: contact lenses that could act as part of a wearable display. Users could instantly augment their view with information—say, the price of an antique in a store or the species of a tree in the forest—or transform their field of vision into a virtual videogame screen. Suddenly the solar company no longer seemed as appealing.
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