It’s the little things in life that add up to the big things. You may not think that a difficult-to-open jar of peanut butter could change your life, but it can. Sometimes you just need the straw that breaks the camel’s back. And that straw can be a piece of bad design. You know exactly what I’m talking about. You spend hours trying to open that vacuum-sealed pair of scissors from Costco, and it raises your cortisol so much that you need to go on a walk around your neighborhood just to calm down. You push on a door that says pull, and you end up with a low-level feeling of humiliation that will come up later in therapy. 

The wrong design can set off a chain of events that end up becoming big themes in your life. You can trace all of your problems back to that jar of peanut butter and how it made you the person you are today. This is why design fails are important.