I pause to ask my readers a question. Are any of you considering uploading your mind into a computer? I think you should be aware of some potential problems.
The idea might sound crazy, but the possibility of such a thing is oft-discussed by scientists and psychologists who think it may be a real possibility in coming decades. How would such a thing work? First let’s consider what is probably the now mainstream view of the mind. The mind, this view advocates, essentially arises out of the complex, dense circuitry that is the human brain. (Each “circuit” could be thought of as an individual neuron of perhaps group of neurons that perform the same basic function like moving your index finger.) According to this view (which I basically subscribe to) your mind is your brain.
Now, if we could map out a person’s brain network down to very small details—and we seem to be getting closer and closer to this—we could then program that network into a computer and thus recreate that person—their personality, their essence—on a computer. And that person could conceivably live forever.
There are a couple problems so far. One being is that you aren’t really uploading your consciousness to a computer as much as you are simply cloning your mind. That consciousness—the uploaded mind—will live forever. The flesh and blood you will still eventually die as flesh and blood does. Also, it’s still unclear how our subjective consciousness arises our of our complex neural machinery. I could program a robot to respond to the wavelength of light we call red, but would it “see” red in any way comparable to the way we see red? It’s that perception that is really the magic of living. Would an uploaded mind possess this subjective magic or would it merely be a very complex robot? I don’t think anyone can authoritatively say.
Now let’s consider another view of the mind, this one advocated by philosopher David Chalmers among others. This view advocates that the mind extends beyond the realm of the brain into the rest of the physical world. To grasp this notion, take stock of your experience right now. You are seeing things, probably hearing things, maybe tasting and smelling things if you’re reading this over lunch. Your experience, your mindstate, would be very different without this particular outside stimuli. So, in a sense, this stimuli is part of your mind.
Here’s another way to think about it. The more popular “your-brain-is-all-you-are” theory I first mentioned says that your brain arises based on various electrical signals zipping through the circuitry of your brain. But what happens when I look at an apple. Photons bounce off the apple into my brain which results in the firing of neurons that somehow result in the subjective experience of seeing the apple. Is not this pathway of photons going from the apple to my eye similar to the pathway of a firing neuron. So is not every outside component (the apple, photons bouncing off it, etc.) part of my mind?
If Chalmers is on to something then we have a problem with mind uploading. If we upload only the brain part of your mind, not the external environment, we are only uploading part of the mind.
Now, maybe this could be solved. Maybe sensors could be created that would duplicate our senses, even augment them. For example, you could have some chemical sensor that, when provided cheese, fired the neural circuits in the uploaded mind that correlate to the neurons that fired when tasting cheese. But this idea seems a lot more complex than the already vastly complex task of uploading a mind to a computer.