{"type":"rich","version":"1.0","title":"switchDemoString wrote","author_name":"switchDemoString (npub1jm…jr3c3)","author_url":"https://yabu.me/npub1jmjdq6p0hn60tpgltd6nxdserkv5su5jmuvl8m5n5vyl73hyqcuq0jr3c3","provider_name":"njump","provider_url":"https://yabu.me","html":"震撼。\n但是没有工业化，人口维持不了那么多。上世纪70年代末，不到10亿人，那时都没法养活，吃不饱穿不暖的。现在去工业化，人口14亿多，还老龄化严重，最大问题是怎么减少人口了。"}