Four Signals Tell A Till You're Done: A featured-researcher campaign for the School of Continuous Improvement, built around a four-way taxonomy of how shoppers signal a finished order at supermarket lanes, strip-mall counters, and food trucks. Resolving to Four Signals Tell A Till You're Done: A featured-researcher campaign for the School of Continuous Improvement, built around a four-way taxonomy of how shoppers signal a finished order at supermarket lanes, strip-mall counters, and food trucks.…