Page 5 brings it all together. With the UDEs at the top and feeds coming in from pages 1, 2, 3, and 4.

Notice how "120 There is often lots of rework in the project" and "570 It takes much more effort to change code later in the process than earlier in the process. (i.e. Boehm's' cost of change curve)" appear both in page 1 and page 5, in a reinforcing loop.
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