Over the course of three million years the member species of the human line have undoubtedly changed significantly. This is what justifies classifying them as different species. Each species in the genus Homo has characteristics of the skeleton and cranium that are recognizable. What is the actual basis to this human evolution?
Since the 19th century it has been assumed that apes have gradually evolved into humans because its better to be a human and reach the so-called pinnacle of evolution. But, upon reflection, there is no reason why this should be the case – if, for example, you were put down in a tropical forest in Africa, you would have a much better chance of surviving as a chimpanzee than as a human.
If human beings were only animals and their ancestors only upright walking apes then they would have evolved in the same way as other animals. Through evolution they would have become adapted to an ecological niche and then remained the same for millions of years, on condition that the ecological niche continued to exist. The niche in question is deep forest in Africa over the past three million years. Gorillas and chimpanzees inhabited this forest with the first species of mankind. The apes are still there like before, while mankind has changed in an extraordinary way.
The reason for that change is this: the human body is adapted to environment and climate as animals are adapted to their environment, but the change in humans is also driven by adaptation to human culture determined by invention. The mind of man creates a human environment to which he adapts.
Each body type in the genus Homo is adapted to a human life style. Humans interact with their environment through the interface of a level of technology. For example, a large cat kills its prey with sharp canine teeth and claws. Humans have flat teeth and nails – no human hunter has ever killed prey with his bare hands.
The trajectory of human evolution makes no sense without the human mind and invention. So this is my thesis: that human evolution goes far beyond any animal evolution because mankind has been ‘sapiens’ from the beginning. The drive itself towards an increase in brain size in the human line is because mankind used his and her brain for human thought. The skeletal features or form of the body are the products of that thought embodied in human culture.
Shared life style and not survival in the wild is at the root of human evolution.
There is not a gradation in humanness, but there is progress. Progress is obtained by beings who are already human and therefore desire what is new and innovative. Progress is not the aim of an unevolved sub-human. There has not been a gradual gradation into being human.
There has never been a knuckle-dragging ape-man aspiring to gradually evolve into a human, while exchanging grunts for words. This is a fiction of evolutionary theory, a construct that was a reflection of our society, and not a true reading of the evidence lying in the ground.