The judgment of the elderly ancient apes initially saved the lives of their tribe, avoiding being washed away by floods or submerged in mudslides by timely hiding on the rocky mountain. However, at the same time, it cut off their escape route.
Evacuation became a distant dream.
The ancient apes at that time simply did not possess the knowledge to build boats.
Tie themselves to driftwood and float along the waves, leaving everything to chance, to see where they could go?
Such an idea seemed beautiful, but in reality, there were many problems.
First, there were no ropes at that time, only vines. Vines were suitable for dragging objects but not for binding people securely, as they could easily slip off.
Second, there weren't enough vines to rescue many people.
Third, this was a barren rocky mountain without much wood.
Fourth, in the raging floodwaters, even if a person clung to a tree trunk, they were still prone to drowning.