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Given the progress of neuroscience in the last century, it must be certain that mind is a software, a neural code, that runs on hardware that is a our neural system. On the lowest level, neurons are gates that can switch on-and-off based on whether other connected neurons are on-or-off themselves. This seemingly simple rule gives a rise to redundancy in calculation that inspired digital computation revolution, cybernetics, in 1940s 鈥 a foundation of computer area. Alan Turing beautifully reduced mundane human activity, a profession called computer, down to pure mathematical form that we now know as a Turing Machine. Robert Weiner and Claude Shannon, as well as many others during that era, drew inspiration for their work in computing from neuroscience. Licklider, godfather of modern computers, was a neuroscientist himself before focusing on computation, mainframes, ARPA and personal computing. Computer was designed in a human analogy in the lowest and highest levels alike.

And this was a powerful work. Computers do perform at a human level and beyond in many tasks ranging from industrial control to word processing, calculations, visualization. Even generally speaking, work with computer interfaces is so smooth 鈥 you can store your thoughts as a text, you can watch videos, listen to audio, send messages to others or call them, virtually visit other places in 360掳, experience 3D sense in VR, write and executing algorithms 鈥 all straight from your brain directly to the Central Processor Unit and Random Access Memory. Wonderful isn鈥檛 it? Increasingly closer to human level, computers perform tasks like flying an airplane, walking {Boston Dynamics}, driving a car {Tesla}, writing nonsense comments {GPT-3}. What this means, we have an overwhelming evidence that human level capacity of thinking can be hosted in computer form. More, it seems, we perfected computation enough for it steadily and not-so-slowly to reach new hights beyond human level in every domain. AGI will happen, we are on the finish line now.

This brings a question, how would our subjective human experience translate to the digital form? Software does not have any dimensions nor laws of physics, it follows only rules of a computing platform that it have been created upon, such as memory access patterns or instruction set architecture. As we learned, every Turing complete language can be translated to any other. Algorithms have nothing to abide. On implementation side, you can create a computer out of a water pipes, or photons, or wooden gears, or Minecraft, or Conway鈥檚 Game of Life, or silicon, later is an obvious choice for performance. Chances are, you would be able to create a computer out of anything. Whenever you can鈥檛 it would be an interesting area of research. On perception side, computer does not observe world in 3D the same way we do. You can feed it 4D, 5D or any dimensional data. It is just what it is 鈥 data. Now, given that our brain is some kind of powerful hardware that hosts what looks like a Turing Complete language and software, we find few interesting leads to question.

When we tap into BCI, we are entering a realm far beyond conventional comprehension. Few commonly associated endowing qualities of BCI are just for starters: exact memory of everything; ultra fast thinking; sharing thoughts; perception of non-visible light spectrum; living forever. Effectively, BCI allows to decouple hardware {CPU, brain} from software {Python, mind} which leads to more intriguing implications: you can store process of computation as a data {assembly + state of memory}; re-run it again; analyze it; execute backwards; stop it; send it to other computer and execute it over there. Time become less relevant: you can tune sampling rate of your sensors as well as clock of your CPU. Sizes become less relevant: say you build an enormous computer by placing CPU on Earth and RAM on Moon and communicating with radio signals 鈥 similarly to how Google servers are thousands kilometers away from your iphone when you google, yet they work as single system 鈥 then program you run is simultaneously present on Earth and on Moon, meaning if that program is your mind then you are being at the both places at the same time and your body spans two stellar objects.

The biggest leap 鈥 and my favorite 鈥 is as follows. Since all senses is just data and can be of any dimensions {perception} and computation is conceptually dimensions agnostic {body}, it does not matter if our world {perception + computation} is 3D or 4D or 10D as long as we can make computing platform for it to run on. Today people can not imagine the 4th dimension, how about your own existence crosses a boundary to place of no dimensions at all! As long as you can run the computation, the whole physics becomes irrelevant. Of course, you would still need some energy to run it, materials to build a computer to run it on, and occasionally fix it, also to cool it. Laws of thermodynamics might come here as an ultimate constraint governing your computer. Back to dimensions, all the evidence we have so far says our real physical world is in fact 3D, even thought it is un-comprehensively deformed by general relativity and quantum mechanics on opposite ends of scale. But, if one day string theory or gravity leakage to extra dimensions will be proven correct and our world turns out to be 10D, well, then we can get some powerful hardware, put on BCI and shake hands with everyone else at the 10D party already.