In the final chapter he reveals his fear that the biggest story of the last 15 years is the growing likelihood that " a cyclical model of history will be a better predictor than a model of ongoing progress" .

他在最后一章中揭示了他的担忧，即过去15年中最重要的事越来越可能是" 历史的周期性模型的预测能力比持续进步模型更强" 。