Carl Sagans Calendar

Carl Sagans calendar is apparently completely different from our own. His calendar is one of which is unusual and utterly unique. It is quite clear that just one year in Sagans calendar is equivalent to approximately a thousand years compared to our calender. His point was announced to me in a way like no other! You see, he created this calendar that displayed all of Earths history, but each bit of that same history involved us,humans.We created that history. Carl Sagans just demonstrated to me what is written in a textbook- how we all build history as the years pass, all through a calendar!