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4 Innovative Business Ideas That Changed Everything These innovative ideas set new standards, and they all stated with someone who noticed a problem that needed solving.

By Margaret Littman

Opinions expressed by Entrepreneur contributors are their own.

They're the ideas that set a new standard -- those that upended everything that came before. And they each started with somebody just like you. "We can all identify the problem. It takes a visionary to see the solution. But it takes an entrepreneur to do something about it," says Naveen Jain, founder of inome and Moon Express. How did these innovations go from deep thought to game-changers? Read on.

Google MapsThe idea: Online mapping technology
What came of it: Google Maps and MapQuest

The advent of on-demand directions not only boosted sales of GPS devices and apps, it also amped up productivity for dog walkers, cabbies and anybody headed into parts unknown.