Not directly stated (and maybe not even intended) but for me the inconvenient truth is that human society is absolutely powerless against nature at the extreme ends of the scale. We can do a lot, we can build sea walls, we can reroute rivers, we can cross over or tunnel under almost any obstacle. But ultimately, the planet is capable of bringing more to bear than we can offset, whether it's wind-driven wildfires, floods, large hurricanes, tornados, earthquakes, volcanoes. The best and only thing we can do in those situations is hope we have enough warning to get out of the way or find someplace to hide.