Secret Purposes Behind Common Items That Will Blow Your Mind

#30: The Shopping Cart Theory

The shopping cart theory says that whether or not a person returns their cart is a sign of moral character. It’s not illegal to leave your cart loose in the parking lot, but returning it is the right thing to do. It’s a small action that benefits everyone—keeping carts out of traffic, saving parking spots, and helping store workers.

Many see it as a test of whether people will do the right thing when there’s no direct consequence for doing the wrong one. It’s a reminder that good behavior often shows up in the little things. So next time you finish unloading your groceries, take the extra few steps to return your cart. It might say more about you than you think.