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Imagine you’re walking your dog. It interacts with the world around you—sniffing some things, relieving itself on others. You walk down the Embarcadero in San Francisco on a bright sunny day, and you see the Ferry Building in the distance as you look out into the bay. Your dog turns to you, looks you in the eye, and says, “Did you know this waterfront was blocked by piers and a freeway for 100 years?”
OK now imagine your dog looks like an alien and only you can see it. That’s the vision for a…
