The Two Lists acknowledge that everything has a cost. Even junk like a free t-shirt takes up real estate in your drawer, saps mental energy as you actively decide whether to wear it each day, incites guilt as you throw it out, or wastes time as you bring it to Goodwill. It’s an easy concept to overlook, but not creating a List B could come at the cost of List A.
At work, I inherited this tool to help people use a poorly designed product. While the long-term solution was to address core issues in the product, this supporting tool had low-hanging fruit, such as glaring usability holes. Rather than preach about these gaps, I leveraged the ever-relevant heuristic from writing: Show, don’t tell.