All of us were given access to this information, because - in theory, at least - anyone in the store could order a couple extra pallets of anything, and could discount it heavily as a Volume Producing Item (known as a VPI), competing with other departments to rack up the most profitable sales each month. Floor clerks even had portable equipment to print their own price stickers. This was how Wal-Mart detected demand and responded to it: by distributing decision-making power to grass-roots level. It was as simple yet as radical as that.