Understanding the system
After hearing about the recurring tremors from his grandparents, Rain nodded in understanding. These tremors, which persisted intermittently for approximately a decade after the meteor fall, sparked a sense of curiosity and concern within him. Initially, Rain had assumed these tremors might indicate some external force attempting to damage the barrier separating the first layer from the second. However, upon deeper reflection, he began to consider an alternative explanation.
Rain considered the possibility that these tremors weren't external threats but rather indications of an internal change within the barrier itself. Imagining that the barrier might be thickening over time, he assumed that this potential increase in thickness could account for the planet's larger size compared to Earth. This insight provided a plausible explanation for the frequent tremors, suggesting an ongoing evolution or alteration within the barrier separating the layers.