Joe and Allan explore the unintended consequences of a number of decisions made in the Chicago area that impacted waste management, water control, river management, and the control of invasive species. Allan brings up the importance of choosing the correct products for the materials and environment that you are working on. Not all related products are the right fit and make for more work later. They wrap up with an update on the Basílica de la Sagrada Família. After 144 years of ongoing construction, the exterior was finally completed this week.