Our brains have a difficult time subtracting. It's often easier for a doctor to add a medication than figure out which to take away. It can take less brain power to rent another storage unit than sort and throw out old stuff. Yet research shows that subtraction can be key to finding the optimal solutions to problems. Professor Leidy Klotz joins Daniel Lev Shkolnik on Re-Enchantment to share a positive take on subtraction.