The mysteries in life
How do eskimos build the tops of their igloos? Sure, I could stack up snow bricks to make a wall -- but what about when you get to the curve of the roof? Yes, I know the dynamics of arches and such, but until you get that cap stone in there, you don't have the arch. Don't you need someone to help you and help hold it up or something? I never see pictures of two people building an igloo though -- it's always just one poor sap and I want to know how he does it.