Why can post-catastrophe films tell us about our current real-world circumstances?

This book proposes that a new sub-genre of film called 'post-catastrophe' is emerging that displays narratives
directly analogous to our current predicament of runaway climate disruption. Post-catastrophe film sits in the
space between blockbuster disaster movies that use scenes of destruction to blow the world up and disrupt the flow of humanity and post-apocalyptic films where a version of society has formed in the ashes of the disaster.

In these narratives, the characters are thrown into a world of unsettling circumstances in which they have to adapt and strive for survival and reimagine the world as it changes around them. We face a similar predicament."