After I use my vacuum cleaner, I empty out the bag and clean the parts that touch the floor. But no matter how careful I am, this process leaves some dust and debris on the floor, so I end up having to vacuum that area again. It’s a minor annoyance, for sure. But I worry about how this pattern influences the customer’s perception of the product. After all, if you use a product to solve a problem, but then have to use it again to clean up the mess the first step created, doesn’t that make the product seem rather inept? I don’t know the answer to that question, but I bet the same problem crops up with lots of products and services. All else equal, I think it’s something that product designers should strive to avoid.