Some manufacturing is coming back to America, to be sure, but not the assembly line jobs that used to be the core of manufacturing employment. Computerized machine tools and robots are doing an increasing portion of the work -- which is why many companies can afford to bring their factories back here. Get it? Technology and globalization are driving the good deals American consumers are getting this holiday season. But the same forces are keeping wages down, and are even on the verge of eliminating many of the low-wage retail and related service jobs many Americans now need to make ends meet. To put it another way, American consumers getting great shopping deals are also American workers on the losing end of those same deals.