Simply put, it says that supposing the humans alive today are in a random place in the whole human history timeline.
On the basis of population growth and probability theory, some argue that those of us alive today are more likely to be nearer the end of the line than the beginning.
This Formula was first proposed in 1983 by the astrophysicist Brandon Carter. Later it was independently discovered by J. Richard Gott and Holger Bech Nielsen.
