Here is an unpublished fact of shopping. There are idiots in the aisle.
They keep the cart in the middle and shop around or simply chat with each other. They create traffic jam and slow down shopping for other shoppers.
Yes, stores don’t want to argue with them because they are customers. Customer is the king, after all!
But hey! What about a bicycle bell in each trolley? Within customers, there should be a republic, right?