The Bay Bridge and other big mistakes

How do you learn from a really big mistake?
Walk across it.
So recently I took a walk across the east span of the Bay Bridge, from Oakland to Yerba Buena Island. This piece of the bridge, is our generation’s biggest California mistake. The east span was completed in 2013—a decade late, costing seven times official projections, and dogged by safety concerns.
However, the bridge does have one virtue: it holds lessons for the future, as California faces the kind of massive challenges th