The approach to flooding in the U.S. is strongly influenced by research and practices that place the responsibility for managing risk on scientific and technical experts. But there is a recognition that the public generally needs to be more engaged and responsible. There is currently a disconnect between the objective knowledge of experts and the more subjective ways in which people experience floods and flood risk. To bridge this gap, I start with a review of the philosophy that informs government policies and the societal worldview. While societal leaders have maintained a mechanistic vision of a world that is ultimately knowable and controllable, scientific understandings have progressed to see the world as complex. Understanding the world as complex implies a need for multiple, mutually supporting knowledges. The philosophy of critical complexity inspired by Paul Cilliers motivates a blending and balancing of complementary objective and subjective understandings, an approach I term complexability. An example shows how data and models utilized routinely by hydrologists can be reoriented to better convey flood risk to the public and provide opportunities for discussion and engagement.
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