We heap on "tasks" yet don't consider "stop-doings." We make motivators for good way of behaving, yet don't dispose of impediments to it. We gather better than ever thoughts, however don't prune the obsolete ones. Consistently, across challenges of all shapes and sizes, we disregard a fundamental method for improving things: we don't deduct. Leidy Klotz's spearheading research shows us what is valid whether we're building Lego models, urban communities, barbecued cheddar sandwiches, or well thought out courses of action: Our psyches will generally add prior to removing, and this is keeping us down. However, we have a decision ? our vulnerable side need not continue incurring significant damage. Deduct arms us with the study of less and engages us to upset our everyday lives and shift how we travel through the world. Pretty much.