Kate Adamick, for instance, has made a career out of advising school districts on how they can capture millions through a multitude of effeciencies. (thelunchtray.com)
not sure the mass reduction using helium would improve fuel effeciency as much as removing all the metal in the chassy. (newscientist.com)
Nonetheless, in aggregate data if we measure labour in effeciency units or something like it then real wages did in fact fall. (worthwhile.typepad.com)