Any one out there to inform me on how long in terms of years the first man cohabited on planet earth. Well i understand very well we are products of nature and evolution.
Also i do not believe in Angels and i believe they don't exist, if at all they exist why is it that up to know for centuries we cannot even find a single trace of them.I think coreligionist should stop fooling the masses that these people like creatures with wings do exist or ever existed.
We will be able to answer "How long did man or humanity exist on this planet?" when we are able (or foolish enough to try) to answer this one: "When did our ancestors change in a way that allows us to conclude 'These were man or human and their parents were not'?"
An analogous question: When did the collected debris in the third orbit from the sun become the earth?
The answer to this questions is a function of just how you define "humanity." If you define it as only anatomically modern humans, the answer is 150,000 to 400,000 years, depending on what evidence you accept. If your definition includes other subspecies of humans, such as Neanderthals which have contributed to the modern human genone, you would go back several hundred thousand years more. If you include upright-walking species different from our own, but which are clearly hominids, it is something over a million. If you include the first ancestral primate clearly differentiated from our ancestral genus, which now includes the chimpanzees and bonobos, the answer is about three million years.
So, as in so many other cases, the answer to your question is a function of how you ask it.