"The options package just grew and grew, and economies of scale were never reached, " says Allison Arieff, former editor-in-chief of Dwell, who wrote the book on prefab in 2002 (Prefab, Gibbs Smith).

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Firms often subcontracted manufacturing to different factories and achieved neither economies of scale nor the standardization necessary to mass-produce green homes, according to Allison Arieff, a former editor in chief of Dwell magazine and an influential figure in the modern prefab movement.

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