The Lost Human Race — Cornhusk
We make the assumption that the human was the first species on earth to write down his thoughts for his descendants to understand. This happened about 2600 BC or 4600 years ago and –
Some Australopithecus afarensis left human-like footprints on volcanic ash in Laetoli, Kenya (Northern Tanzania) which provides strong evidence of full-time bipedalism. Australopithecus afarensis lived between 3.9 and 2.9 million years ago. —Wikipedia
Splitting the guesstimate above (3.9 and 2.9 millions) for demonstration purposes we arrive at 3.4 million years as an agreeable estimate of the age of the creature who later became homo sapiens and Neanderthal etc. (3,400,000 years.) Keeping in mind that 4,600 years ago man, with the invention of writing, finally became capable of passing on his memories and tales told to him by his parents and the old tale tellers of his or her particular village we can say that man knows only the last 0.1412 of 1% of his history with any degree of accuracy. Another way of putting it is man knows practically nothing about the ascent or descent of himself. There is an ocean of time when the creature human strutted and fretted upon the face of the earth with no way of passing anything specific of his tale to future humans. There is every reason to expect that man at one time or another was absolutely everywhere, and that entire cultures long buried in the concrete dust of ages sleep silently with no hope of being ever awakened. As a matter of fact how dare we just assume that he had no curiosity or sense of wonder? If the human bean has one trait in overabundance it is audacity and love of adventure. They must have done so much; the rise and fall of dynasties and civilizations, with no one in the present to ever comprehend because they didn’t write. What wonder did they experience? How many times did they try and fail? What did they believe in?