据我们测算，如果1900年便已消灭了文盲，世界应该比实际情况多拥有2400亿美元（经通胀调整）的财富，相当于当时全球GDP的12 % 。
We estimate that if there had been no illiteracy in 1900, the world would have been $240 billion richer (in inflation-adjusted terms), equivalent to about 12% of global GDP at the time.