Programmer Humor

Even if you ignore all the neuromodulatory chemistry, much of the interesting processing happens at sub-threshold depolarizations, depending on millisecond-scale coincidence detection from synapses distributed through an enormous, and slow-conducting dendritic network. The simple electrical signal transmission model, where an input neuron causes reliable spiking in an output neuron, comes from skeletal muscle, which served as the model for synaptic transmission for decades, just because it was a lot easier to study than actual inter-neural synapses.

But even that doesn't matter if we can't map the inter-neuronal connections, and so far that's only been done for the 300 neurons of the c elegans ganglia (i.e., not even a 'real' brain), after a decade of work. Nowhere close to mapping the neuroscientists' favorite model, aplysia, which only has 20,000 neurons. Maybe statistics will wash out some of those details by the time you get to humans 10^11 neuron systems, but considering how badly current network models are for predicting even simple behaviors, I'm going to say more details matter than we will discover any time soon.

I heard a hypothesis that the first human made consciousness will be an AI algorithm designed to monitor and coordinate other AI algorithms which makes a lot of sense to me.

Our consciousness is just the monitoring system of all our bodies subsystems. It is most certainly an emergent phenomenon of the interaction and management of different functions competing or coordinating for resources within the body.

To me it seems very likely that the first human made consciousness will not be designed to be conscious. It also seems likely that we won't be aware of the first consciousnesses because we won't be looking for it. Consciousness won't be the goal of the development that makes it possible.

I’d say the details matter, based on the PEAR laboratory’s findings that consciousness can affect the outcomes of chaotic systems.

Perhaps the reason evolution selected for enormous brains is that’s the minimum necessary complexity to get a system chaotic enough to be sensitive to and hence swayed by conscious will.

Also, some of what happens in the brain is just storytelling. Like, when the doctor hits your patellar tendon, just under your knee, with a reflex hammer. Your knee jerks, but the signals telling it to do that don't even make it to the brain. Instead the signal gets to your spinal cord and it "instructs" your knee muscles.

But, they've studied similar things and have found out that in many cases where the brain isn't involved in making a decision, the brain does make up a story that explains why you did something, to make it seem like it was a decision, not merely a reaction to stimulus.

let alone if it’s technically “real” (as in physical in any way.)

This right here might already be a flaw in your argument. Something doesn’t need to be physical to be real. In fact, there’s scientific evidence that physical reality itself is an illusion created through observation. That implies (although it cannot prove) that consciousness may be a higher construct that exists outside of physical reality itself.

If you’re interested in the philosophical questions this raises, there’s a great summary article that was published in Nature: https://www.nature.com/articles/436029a

I read that and the summary is, "Here are current physical models that don't explain everything. Therefore, because science doesn't have an answer it could be magic."

We know consciousness is attached to the brain because physical changes in the brain cause changes in consciousness. Physical damage can cause complete personality changes. We also have a complete spectrum of observed consciousness from the flatworm with 300 neurons, to the chimpanzee with 28 billion. Chimps have emotions, self reflection and everything but full language. We can step backwards from chimps to simpler animals and it's a continuous spectrum of consciousness. There isn't a hard divide, it's only less. Humans aren't magical.

Thank you for this. That was a fantastic survey of some non-materialistic perspectives on consciousness. I have no idea what future research might reveal, but it's refreshing to see that there are people who are both very interested in the questions and also committed to the scientific method.

What's the difference between the two?

Well there's no proof, it's all speculative and even the concept of scanning all the information in a human brain is fantasy so there isn't going to be a real answer for awhile.

But just as a conceptual argument, how do you figure that a one-time brain scan would be able to replicate active processes that occur over time? Or would you expect the brain scan to be done over the course of a year or something like that?