Do you want to live forever? Let’s talk about it. Or at least talk about how we as humans could become immortal. Starting with what seems like the “simplest” path to immortality on paper, something akin to uploading a copy of your consciousness to a computer or bio computer. Which does sound good on paper, no biological aging, easy to move your consciousness to a different computer if something happens. But that copy, or uploaded consciousness, wouldn’t really be *you*, it’d be a separate entity containing all your memories, but it wouldn’t be you. Because what makes you, you, is your brain. A copy of your brain is not you. It’d be the same as making an exact clone of yourself and giving it all your memories. So I don’t think that really counts as immortality. Immortality in my mind has to mean retaining your full consciousness. Remaining who you are. Otherwise what’s the point? That means retaining your current biological brain in some way.
But brains go bad, they get diseases, given long enough they will run out of literal memory. Does that mean true immortality is impossible? You could have a full robot body with just your brain, but that brain, which is you, will likely die eventually. Even if we cure the kinds of diseases that the brain can suffer, like dementia, it will run out of memory, you’ll inevitably forget things, major things, no matter what. You’re how old now and look at how bad you are at remembering stuff. Imagine what it would be like 200 years down the line. That is unless you could augment the brain in some way, like via implants. Which in actuality, that’s probably the most likely path to living forever, or at least living for hundreds of years. We sure aren’t going to see it, but maybe humans in a dozen generations or so will, assuming we don’t ice the planet by then.
Or in more major ways of augmenting the biological brain, could you completely replace entire lobes of the brain with cybernetic parts? As long as some part of the biological brain remains it’d still be you, right? There’s people today who are able to function without specific lobes, and even without an entire hemisphere of their brain, so it seems feasible. The brain adapts, it can rewire itself, so the old biological parts and new cybernetics would sort of meld together and co-exist on paper.
But then that brings us to, how much of the brain can you really replace before it ceases *to be* you? If you do it in intervals, piece by piece, until the entire thing is cybernetic, is that still you? Or do we end up at the issue of it just being a copy of your consciousness again? How would we even be able to tell until we undergo a procedure like that ourselves? Basically just end up with a Ship of Theseus type issue. I do think this way would have a higher likely hood of you retaining your consciousness versus computer upload at the very least. And if we were to use actual new, biological brain lobes that are grown in a lab, instead of cybernetics, I’m certain you’d retain your full consciousness so long as the lobe replacements are done in intervals.
I feel like no matter what, we as a species are stuck with being at least a little fleshy. Doesn’t matter how close to immortality we get or how advanced we are. Gotta keep that brain (or at least part of it) intact if you wanna stay human.