There is a common geographical knowledge.
The geographical landscape where the poles of the Earth are covered with ice and snow is a state that is very rare in ordinary environments.
Either the ice caps cover the globe, or the surface is completely governed by oceans; this is what people would see most of the time.
Humans happen to live during the period when the ice caps began to disappear due to planetary activities.
From a broader perspective, it can be said that they have encountered an extremely rare special period.
And now.
This book, "Northern Enertifa Chronicles," in front of Ronald.
Makes him suddenly detach from the common sense brought from Earth and notice this slight peculiarity.
This is another world!
Even just from the perspective of probability, the planet beneath his feet likely doesn't have an environment with extremely low ice caps, let alone explorers discovering a habitable special environment there.
