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# Graph

 This diagram had a circle in the middle connecting several boxes by lines. The center circle says: SYSTEM MARKET willingness-to-pay for the old system = b willingness-to-pay for the new system = b' The left middle box, titled A2, has a line that connects to box A1 and the circle in the center. The left middle box says A2 cost = a The left top box, titled A1, has a line connecting to box A2, the center circle and box B2. The left top box says: A1 cost = c The right top box, titled C1, has a line connecting to box B2 and the center circle. The right top box says: C1 cost = c+d The right middle box, titled B2, has a line connecting to box C1, box A1and the center circle. The right middle box says: B2 cost = a The right bottom box, titled A2', has a line connecting to box A1' and the center circle. The right bottom box says: A2' cost = a' The left bottom box, titled A1', has a line connecting to box A2' and the center circle. The left bottom box says: A1' cost = c'
Updated June 25, 2015