Read the series so far.
In a Twilight Zone kind of moment, imagine an all-night grocery store. Few are there: a stocker, a maintenance worker, and a check out cashier. Three shoppers arrive at approximately the same time. Sleepily they shop for the few essential items on their list. Coincidentally, and unbeknownst to each other, they manage to add the same six items—down to the very brand and packaging—to their shopping carts: milk, cereal, hamburger, two loaves of bread, and pancake mix. They move to the checkout.
The cashier is amazed by the oddness of the event: three shoppers, three carts, six items in each cart. And each cart has the very same identical items. He rings up shopper 1 then shopper 2, and then shopper 3: