A couple of weeks ago, Edgar Dworsky walked into a Stop & Shop grocery store in Somerville, Mass., like a detective entering a murder scene.
He stepped into the cereal aisle, where he hoped to find the smoking gun. He scanned the shelves. Oh no, he thought. He was too late. The store had already replaced old General Mills cereal boxes — such as Cheerios and Cocoa Puffs — with newer ones. It was as though the suspect's fingerprints had been wiped clean.
Then Dworsky headed toward the back of the store. Sure enough, old boxes of Cocoa Puffs and Apple Cinnamon Cheerios were stacked at the end of one of the aisles. He grabbed an old box of Cocoa Puffs and put it side by side with the new one. Aha! The tip he had received was right on the money. General Mills had downsized the contents of its "family size" boxes from 19.3 ounces to 18.1 ounces.
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