Imagine walking into a cafeteria. The salad is at eye level and the fries are tucked in a corner. Without thinking, you grab the salad. Nobody forced you — you could have hunted for the fries — but the way the food was arranged nudged you toward a healthier choice. That small shift is what choice architecture is all about. It can help people make better choices — from saving for retirement to paying taxes — without taking away their freedom.