2006 02 09 Life as a Clock


Considering the 4.5 billion years of the planet compressed into one earth day:

Relatively speaking, humans have been on the planet for about 77 seconds of a 24 hr day.

Another way of looking at it is to stretch ones arms to represent the entire history of the earth. The distance from the fingertips of one hand to the wrist of the other represents the Precambrian (pre-fossil) era. All the complex life of the earth is represented by one hand, and the entire human history is represented by a single stroke of a medium-grained nail file.