"Not waiting for perfection enables immediate progress and emboldens adjustments to our spaces based on data. In 2011, we brought the first Parklets—innovative seating platforms—to Philadelphia (Hack). We started with two small Parklets and expanded to six throughout the community, adjusting the design based on user feedback (Tinker). We made them strong, durable, and flexible. This built trust with neighbors, shop owners, and City officials such that within three years Parklets went from a UCD experiment to a program that the City runs in communities throughout Philadelphia. "