"The Third Industrial Revolution," Economist, April 21, 2012; Peter Day, "Will 3D Printing Revolutionise Manufacturing?," BBC, July 27, 2011, http://www.bbc.co.uk/news/business-14282091.

125 manufacturing as profoundly as ma.s.s production did

"The Third Industrial Revolution," Economist; Day, "Will 3D Printing Revolutionise Manufacturing?"

126 later produce en ma.s.se in more traditional processes

Day, "Will 3D Printing Revolutionise Manufacturing?"; Neil Gershenfeld, "How to Make Almost Anything," Foreign Affairs, September 27, 2012.

127 prototyped as 3D models for wind tunnel testing

"The Printed World," Economist.

128 builds $2,000 models and completes them overnight

Ashlee Vance, "3-D Printing Spurs a Manufacturing Revolution," New York Times, September 14, 2010.

129 the expense of employing large numbers of people

Day, "Will 3D Printing Revolutionise Manufacturing?"; "The Third Industrial Revolution," Economist.

130 material that is used in the ma.s.s production process

"The Printed World," Economist; Jeremy Rifkin, "The Third Industrial Revolution: How the Internet, Green Electricity, and 3-D Printing Are Ushering in a Sustainable Era of Distributed Capitalism," Huffington Post, March 28, 2012, http://www.huffingtonpost.com/jeremy-rifkin/the-third-industrial-revo_1_b_1386430.html.

131 not to mention a small fraction of the energy costs

"The Printed World," Economist; Rifkin, "The Third Industrial Revolution."

132 even as their value has increased more than threefold

Diane Coyle, introduction to The Weightless World: Strategies for Managing the Digital Economy (Oxford: Capstone, 1997).

133 unsatisfactory for many kinds of specialized products

"The Printed World," Economist.

134 delivery of parts to the factory and finished products to distant markets

Day, "Will 3D Printing Revolutionise Manufacturing?"

135 each product to widely dispersed 3D printers

"The Third Industrial Revolution," Economist; Gershenfeld, "How to Make Almost Anything."

136 "warehouses waiting to be printed locally when required"

Day, "Will 3D Printing Revolutionise Manufacturing?"

137 prints an entire house in only twenty hours

Vance, "3-D Printing Spurs a Manufacturing Revolution"; Behrokh Khoshnevis, TEDx Conference presentation, February 2012.

138 in some cases, 1,000 items

"The Printed World," Economist.

139 turning out hundreds of thousands of identical parts and products

Ibid.

140 do not have protection against replication under "useful" copyright laws

Michael Weinberg, "The DIY Copyright Revolution," Slate, February 23, 2012, http://www.slate.com/articles/technology/future_tense/2012/02/_3_d_printing_copyright_and_intellectual_property_.html; "The Third Industrial Revolution," Economist; Peter Marsh, "Made to Measure," Financial Times, September 7, 2012.