Looking at it from an evolutionary perspective, I can't make sense of why conscious experience exists
TL;DR I don't see how evolution could explain the brain generating conscious experiences. Maybe the whole reasoning that the brain somehow generates consciousness is flawed? Please share your thoughts.
Basically the title. Why does consciousness exist at all? I was thinking about evolution. The organisms that survive to reproduce are the ones that determine the future characteristics of a species. How does consciousness fit into this at all? I feel like this should disprove the theory that consciousness arises out of some sort of process in the brain. But I don't know anything, so I'm asking as well as sharing my existing thoughts in detail.
I don't really expect any answers, but it makes for interesting discussion. Please note that these are thoughts and I'm open to re-examination thereof.
What benefit is there to being conscious? Wouldn't it end up being a net detriment to the survival of a species? Let's do a little thought experiment and compare a conscious member of a species to a non conscious member of a species in a simplified situation.
Non conscious: A threat in the environment is detected. Once the sensory organs relay the information to the brain and the brain determines that there is a threat, the next step is to react. Assuming it's an intelligent species, similar to humans, the brain would calculate the best possible actions to take to evade or neutralise the threat as quickly as possible. Adrenaline is released to stimulate the body into being able to carry out these actions quickly. The result is a near instantaneous reaction. The quicker that this process unfolds, the higher the chance of survival.
Conscious: A threat in the environment is detected. The sensory organs have relayed information to the brain. The brain has taken in information. I feel like one of two things could happen here. Either the brain is always wasting energy generating a conscious experience or the brain now has to generate a conscious experience of the image and emotions of the threat before it can even trigger a reaction. Both scenarios are less favorable to survival than the unconscious version. Again, at best the brain is constantly wasting energy, which drives up the need for calorically dense foods, further reducing survival odds. Or, even worse, the generation of the conscious experience causes minor disruptions to reaction time because the conscious experience has to be generated so that the situation can be analysed from a conscious perspective before the reaction can take place, slowing everything down. Then, finally, adrenaline is released and the necessary reaction can take place.
I think that the non conscious member of the species would have a survival advantage either way.
But here I am, experiencing myself writing this. Which is a good indicator that if consciousness does arise within the body that it would have to serve a really important purpose.
Here are some theories that I found online and my corresponding thoughts.
"Consciousness provides the ability to pause before acting, allowing for deliberate, learned responses to complex environments rather than pre-programmed actions."
I don't think that really explains it. Machine learning exists to solve this issue in the land of computers. I'm fairly certain that my MacBook isn't conscious. I sure hope not. Learning and adaptive behavior can exist without conscious experience, so that explanation's out the window.
"It serves as a mechanism to guide complex actions and control the nervous system, essentially enabling conscious 'will' or agency."
Again, complex actions do not require conscious experience. My computer probably isn't conscious when it's solving complex equations or running some math on probabilities and possible outcomes.
"It may have evolved to help individuals navigate social groups, understand others' minds, and manage cooperative, yet complex, social interactions."
I think that cold and logical reasoning would actually produce a more coherent set of responses to social communication, which would now all be directed toward actions that further the survival of both the individual and the group, as opposed to having to deal with time consuming and inefficient subjectively experienced emotions. This would drastically reduce friction and increase group survival odds. Even something such as choosing a leader would suddenly involve logical calculations on which individual was best equipped for the job.
"Consciousness helps the brain prioritize, focusing awareness on crucial survival-related information while filtering out unnecessary noise."
Computers, again. They recently simulated a fruit flies brain and let it control a virtual fruit fly so that we could see the behavior. I'm sure that the same would apply to threats in the environment, not sure if they modeled those, but I'd speculate the virtual fruit flys response to a threat would be the same.
"By creating a subjective experience of 'self' (such as evaluating one's own body position), organisms gained advantages in maneuvering in complex physical environments, such as navigating trees or hunting."
We now have AI enabled robots that do just that. I doubt they have a conscious experience. We have self driving cars which do make mistakes but are being improved on over time, but they run on similar logic.
Why do most researchers want to stubbornly look in one single direction for an explanation? The question at some point became "How does the brain generate consciousness?" What if we look in a completely different direction? What if consciousness doesn't arise from processes in the body at all? What if consciousness is actually something completely separate from the body? What if consciousness is a fundamental property of reality? What if consciousness actually created lifeforms because they play some important role for consciousness, and the relationship is actually inversed and we should be asking why the body exists as a byproduct of consciousness? There are so many other possible explanations.
But we have never scientifically investigated any of this in depth, doing so seems impossible because a conscious experience can't really be proven or measured with current methodology, so we have no answers, and it's possible that the human race will go extinct before we get a chance to answer any of those questions.
Here is another thought. I've just spent a lot of time thinking about this, and writing this, as a direct result of consciously experiencing and trying to understand how, where and why that experience originates. I could have been doing meal prep. I could have been in a hibernation like state to conserve energy. I could have been planning how to earn more money. I could have done a lot of things that would be much more productive to my own survival. So why am I doing these things? Consciousness.
But what benefit has this served to me or the species? I expended energy writing this. I had no survival reason to do so. People might read this, burn their own calories running their own brains, and they might even think about it further and spend even more energy sharing their own thoughts.
Why?