If the population collapse wasn't economically devastating than this would be true. But, according to the book, lower fertility rates result in an aging populat

If the population collapse wasn't economically devastating than this would be true. But, according to the book, lower fertility rates result in an aging population that becomes an economic liability -- especially if it happens rapidly. In an economic crisis, resources become constrained even if there are technically plenty to go around. I'm sure there are examples of this in America's Great Depression. I'm not by any means an expert in this area -- just doing the best I can to paraphrase what so far has been a very interesting and paradigm shattering book.