Comments of chapter undefined of Embers Ad Infinitum

As I understand it, they mention it in a chapter but I don't remember it completely, but it was due to a possible abrupt climate change (Like the formation of that swamp with the snake they killed), the mutated creatures. There was an idealistic group that tried what you mentioned, gather many people and systematize everything as before, but I don't remember why they failed, for their ideals or for other reasons (I think they called themselves the army of salvation). In addition, all the knowledge is not complete, although a great power could have it, but if I remember correctly there are also shortages of people but they would not send LongY ... to a group that performs dangerous missions, instead of trained soldiers. There is no internet and it's only been like 60 years since everything started, maybe in the future it can be done but with 60 years and in a world of chaos people think about how to survive tomorrow and they don't think about harvesting something that takes months. Just look at the citizens of Moat Town, although their beginning was the most "ideal" for a place that was not reached by the catastrophe (other than a great power), they still have to go out to search the ruins because they need many things other than agriculture. When a gear is missing the machine can stop.