From the origin of life there's lots that can be talked about. There was lots of life long before humans. I note that humans evolved from its pre-human state and so the question is how does human intelligence relate to pre-human intelligence. I note that learning is evolving. Life evolves; life is intelligence to some extent. That's all I want to say about much of that life here on this blog. This takes me back to those Latoli footprints. Back then, we didn't leave much artifacts except for a few stone tools that are hard to distinguish from comman rocks and our own bones. That's what I really wanted to say about those footprints. That's all they left for us to dig up at that time; but, that doesn't mean they weren't intelligent. They had little to start with to work on and generalize. Those are our beginnings. I want to go a bit further in this post actually.
Again, one can see daming up nature to a certain extent. I would think that those who did the cave paintings also painted outdoors. But those paintings always got washed away. So, some figured out how to make them last - paint in the caves! They painted as well as the Egyptians of tens of thousands of years later. I choose the painting of their hands because for me this is symbolic of consciousness.
I think this is enough for now.