The article seems to say that the estimate of all who have lived is about 106 billion, so the number of currently-alive is estimated at about 6% of those who ha

The article seems to say that the estimate of all who have lived is about 106 billion, so the number of currently-alive is estimated at about 6% of those who have ever lived. Arthur C. Clarke wrote "Behind every man now alive stand thirty ghosts, for that is the ratio by which the dead outnumber the living." I wondered if that ratio needed updating. It does, but not, it seems, in the direction I expected.