How did consciousness evolve? Sorry for my bad English, I'm not a native speaker.
Well there is one thought experiment that I think about when I think about the origin of consciousness:
The universe could exist and still evolve the same way without consciousness. That universe would have humans in it but they would not experience any concious state. So they would, as we know for now, be robots. They'd act the same by calculating the same answers the the questions they encounter, like we do. So everyone in our universe would have a duplicate in that universe but it would have no conciousness.
The universe in the thought experiment would be the one I could explain better as why it is like it is, than the universe we live in. In which I constantly experience the happening around and in me.
So just to say evolution developed conciousness is by my means rather less profounded. Because what the "argument" states is, that it was an advantage to be concious. But the foundation of which this "argument" (more of a false conclusion in my eyes) is build upon the reflection of ones goals, feelings, social bondings, etc. This might not be what conciousness is all about.
Here we have to consider what conciousness is. Is it the calculating, reflecting and controlling part of the human or is it the experiencing of what it is like to be a human, other animal, plant, electron, etc. It still can also be the guiding power of what it beholds but still it seems to be separate of the materialistic object it settles in.
Secondly if you are speaking to somebody you usually don't think of what exact words you are going to say, you more or less guide your body to describe the subject you are talking about. This implies (to me at least) that the calculations needed for acting are done by the subconciousness but guided by conciousness. So conciousness is the one which experiences but also which decides to do what you want to happen.
In conclusion evolution helped us to develop senses and intelligence. But what is the exact advantage for having a concious mind? We can function without it, probably even better without it, because everything in the universe is made up of energy, so why would not be conciousness also be made energy? And this has to be supplied by the body.
So here I go from biology to physics, if everything in the universe adds up to a zero energy level, why is there a concious state, it would take up more energy than needed to have the same universe?
I have my own answers to that question but i'll leave this would have to have a longer explenation.