Our intervention in the most widely read English daily in Sri Lanka emphasizes the “smart” in smart cities. A middle option focuses on citizens moving through time and space in the city as the primary sensors. They generate the big data that when analyzed constitute the feedback that is the essence of a smart city. Experimentation and learning are integral to this low-cost approach. It is especially appropriate for the organically developed, congested cities in developing countries where the costs of installing and maintaining city-owned sensors would be quite high.