如果西方以及其他地方（比如日本）的老龄化社会没有正确对待移民，当真正的浪潮来临时，它们将不知所措：婴儿潮一代在今后20年内退休。
If aging societies in the West and elsewhere (like Japan) fail to get immigration right, they will be woefully unprepared when they confront the real tidal wave: the retirement of baby boomers in the coming two decades.