User blog comment:Wither28/A lot of important changes to my life/@comment-27003513-20160613200255/@comment-27517963-20160616150512

If you built a wooden box with nothing but planks, a door, and a floor, it would collapse. You woukd need to nail it so it sticks and add supports. Many people today use computers to see how much support hey need on a building. The native Americans put on more support then needed becayse they didn't know how much exact weight to put on it.