Renewable Goals: Set the Bar Low or Shoot for Stars?

Brian O'Neill doesn't have a problem with the goal of trying to run cleaner engines to clean the air and reduce carbon footprints, but skepticism at the attainability of the goal inspires this column.
O'Neill speaks with Grant Ervin, the city’s chief resilience officer, to discuss the idea of setting lofty, perhaps impossible goals (the example of Vision Zero comes to mind). To justify the city's lofty goal setting, Ervin presented two analogies, both referencing local institutions—the Bloomfield Bridge Tavern and the Pittsburgh Pirates.
The Bloomfield Bridge Tavern used to have a sign that read "The Worst form of failure is the Failure to Try" (capitalization from the original). The general manager of the Pittsburgh Pirates entered the current season predicting a .500 team—mediocrity at best. "'What type of team goes on the field without trying to win the championship?' Mr. Ervin asked. The goal of 100 percent renewable energy in 12 years 'creates a North Star.'"