Early work identified the challenge of reaching any realistic break - even for the technology at the scale of construction .
Early work highlighted that there could be ways into the application by massively increasing the value proposition of integrated design ( many functions , one component ) .
Early work identified the challenge of reaching any realistic break - even for the technology at the scale of construction and highlighted that there could be ways into the application by massively increasing the value proposition of integrated design ( many functions , one component ) .