In this episode:

1. Mac gets into a discussion of the 6 different systems that comprise those that are affected by change.

2. Mr. Grimes is struggling to deal with the War on Waste Paradox. He has identified a couple of corollary paradoxes but not the one Dr. Elbie is helping him find.

3. In the insights section, Len discusses the way that energy plays a big role in understanding why the War on Waste works and what is required to sustain the progress achieved during the program.