The Big Bang: The Three Eras Of The Universe

Before the middle of the twentieth century, most astronomers thought there wasn’t any history to the universe, and how the many features existed today. In spite of that there were disagreements involving this non-evidential theory that was not proven by many. Through all the research/studies, scientists call the first of all, historical dates, “Big Bang” which lasted around 13.7 billion years ago. Although we may not know what happened before the “Big Bang,” Christian provides us with many factual details of each three eras throughout history: foraging, agrarian, and modern era. The view of humanity expands much wider in a larger scale, each and every day which makes history “big” to the point people cannot understand it all-in-one. For each …show more content…
According to the prequel, David Christian explains to us how the Earth undergone many drastic changes. Meanwhile, he informed us on how humans evolved and adapted to the Earth’s evolution starting 1 to 2 millions of years ago when the first humans arose- Homo habilis. Afterwards, he revealed to us modern humans which are called, Homo sapiens- closely related to humans today. Thus, technological innovation slowly spread from one era then leaping to a whole new level later on in each era. Christian writes, “Historians have had a hard time integrating the era of foragers into their accounts of the past because most historians lack the research skills needed to study an area that generated no written evidence (2). This Fleeting World: A Short History of Humanity includes 132 pages total. From the beginning of humans to today’s modern society, we think it is not necessary to know the past. When we grow older, we come to realize what is the moral value of World History and how difficult it is to comprehend why are we learning about it; Christian delivers a remarkable message to each ones’ mind thoroughly and