Why Martha Saved Five Hundred Paper Receipts From Her Weekly Grocery Trips

tracing the faded thermal print. “A double charge for three gallons of whole milk.”

“Three dollars and forty cents each,” I said. “The self-checkout machine scanned the carton twice, but I only had one gallon in my blue plastic basket.”

Vance turned to the printed system logs, flipping through three pages until he found the matching timestamp from that continue reading …