There is no increase in framing materials from standard construction, but the embodied energy of the system increases with the addition of high density spray foam insulation. (buildingscience.com)
Natural science referred to the study of the structure and workings of material realities, the wisdom that frames the material order. (faith.org.uk)
While frame material, geometry and the like are important, what you are most likely to notice is an unreliable gear set. (treehugger.com)