Everything is gone." It has been more than a century since a German doctor, Alois Alzheimer,told about a dementia patient whose brain was studied after death.

VOA: special.2009.09.15

The green line is the building costs and you can see that building costs, since 1890, in real terms-- everything is corrected for inflation -have gone up a little bit since 1890, but not a whole lot.

绿线表示了建筑成本,你可以看到建筑成本,自1890年来,以实际值计算,所有的数据均进行了通胀修正,从1890年开始有一点点上涨,并非是大幅度上涨

耶鲁公开课 - 金融市场课程节选