Another way food stores indirectly trick their consumers is to reorganize (or disorganize) products periodically. Entire food sections can shift from one side of the building to the other, sometimes as often as once a year. When stuff is in a different spot, clearly you can't readily find what you need. So, what do you do? Wander up and down aisles searching for the things on your shopping list. You see a lot of items that you wouldn't otherwise notice. Animal-shaped straws -- the kids would love them! A type of parsley not carried here previously -- perfect! Inevitably, you toss some of it into your cart. The store wins again.