The Gap Theory
It is widely known that historical geologists currently think the earth originated about 4.6 billion years ago, whereas the Bible indicates that "in six days the Lord made heaven and earth, the sea, and all that in them is" (Exodus 20:11).
Earth’s Population
The statistics of human populations give further support to this intimation. Ever since the famous studies of Malthus, it has been known that human populations (applied to animal populations by the first Charles Darwin, in developing his theory of evolution by natural selection) have tended to increase geometrically with time.