On Saturday, at Walmart, a cashier thanked me for leaving the heavy things in the cart, so she could simply scan them, instead of having to move them from the moving belt to the bagging area. She had waited on a woman previously who refused to do that, she told me. The cashier had suggested the customer leave her several boxes of sodas in her cart, saving them both a lot of unnecessary lifting. The woman refused, choosing instead to heave each box from her shopping cart onto the moving belt. The cashier scanned the sodas then told the woman she could put them back into her cart.