Prevailing decision-making assumes shorelines can continue to be maintained and protected from extreme storms, flooding and erosion, even with RSLR . Rapid coastal development has increased exposure of coastal communities and infrastructure  , reinforcing perceptions of safety  and creating barriers to retreat and nature-based adaptations  . The efficacy and increasing costs of protection and accommodation risk reduction approaches and rebuilding after extreme events have been questioned and have limits . Future shoreline erosion is often signalled using defined coastal setback lines and using probabilistic approaches to signal uncertainty .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report