Senkuu ran into a girl Kohaku, whom he later learned was from a civilization which had formed their home in a village somewhere not too far from the main land. The village so far consists of 40 people. But, unlike Senkuu, they show no possession of any prior scientific knowledge. Are they descendants of some who had long ago broken out of petrification, or could they have originated from some who escaped the previous disaster altogether?

) Because isn't it weird? A village made by a scientist....that has no idea about Science? If you started something wouldn't you want it passed on even to people who you associate with?
This is what I see happening: