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Today on the Wintrust Business Lunch, Amy Guth sits down with Greg Topel, the CEO of Tanvas, a company making it possible to feel the things you see on your phone screen. Then she’s joined by Rob Kelter, creator of Smart Thermostat Program. Assistant Managing Editor at Crain’s Chicago Business, Cassie Walker Burke talks to Amy about some Halloween themed start-ups around the city. Plus, a quick conversation with Josh Dzieza from The Verge, about how ratings based apps have turned customers into middle managers.