So, overall, statistics about happiness seem to be as accurate as many of the statistics regularly used by politicians, such as public-opinion polls, poverty rates, or, for that matter, GDP growth – all of which are riddled with imperfections.
因此总的来说，幸福感统计似乎与政治家经常参考的其他统计数据（比如民意支持率，贫困率，或是GDP增长率）同样可靠，而且这些统计其实也都存在着大量缺点。