Think of watching out for your family, and making sure they remain unaffected by an outbreak of poison that has crept into the food supply. How do we keep people from spiritual poison, or administer the antidote? Live in a building that doesn't let the poison in. 1 - From The Foundation (1) 2 - To The Upper Floors (2) 3 - Use Correct Materials (3) 4 - Reject Cutting Corners (4) 5 - Marvel At These Pieces