"[W]hen you're experimenting, about 80% of the ideas you try are failures... But we put all these concepts together and they performed the first time. ...[W]e had pretested most of the ideas we incorporated into this [our] home. We'd never used aluminum-skinned, honeycomb-cored structural sandwiches and... no one had... fabricated a complete building from the material... but every architectural and engineering book mentions the possibility... The 55-gallon, water-filled drums... [W]e... knew the amounts of energy... such... could pick up."