This is something I wrote a long time ago, but which still bears out, I believe. It is a method I would be willing to employ to transfer my consciousness into another body, or into a computer.
To illustrate why this is important, let me say that I would not be willing to use a teletransporter that copied
my entire physical form, sent the data to another terminal which
reconstituted me, and then destroyed the original. Although I have no
philosophical objections to this happening, I find the idea highly
emotionally disturbing and would never go through with it. For that
matter, even if the original wasn't destroyed but was rather pulled
apart and transferred, I still wouldn't do it for reasons I think are
obvious.
Likewise, I would not be willing to be, say, put to sleep, have my brain
scanned, then be uploaded to a machine and have my body destroyed. I
would not object, of course, to having a copy of my mind made, to be run
later or used as a sort of back up.
However, there is a way I would be
willing to actually abandon my body and live in a virtual world
(assuming of course all assurances of liberty and safety, etc). If my
various faculties — sight, hearing, language, independent limb motor
control — were to be transfered one by one to an emulator running on a
computer connected to the various sensors and devices which would
temporarily mimic said faculties, I would be able to track the progress
of my mind from my head to the computer. I imagine the process something
rather like this:
I sit down in the chair, my head shaved and access plugs and
sub-cranial scanning mesh installed. The technician behind me takes one
long wire and inserts the end of it into the plug square in the back of
my head. He asks me if I'm ready. I take a deep breath and then nod. I
hear a switch flip, and then I vomit. My body thinks that I'm having a
stroke, or have an eyeball knocked out of its socket, or am spinning
faster than my eyes can focus on anything. After a few moments, I start
to orient myself. I am looking ahead, at a large black box, the size of a
television set, with a forest of instruments sticking out of it. I also
see my body, sitting in a chair, a host of medical equipment and one
technician behind me. I raise my right hand from the arm of the chair,
and see it both out the corner of my eye and from across the room
simultaneously. Finally, I come to grips with the fact: my brain is
getting direct data from a video camera hooked up to a computer. The
technician asks me again if I'm ready. I've long ago memorized the
sequence of the procedure. I hear another switch flip and a loud
humming, and slowly my vision of the computer in front of me fades.
However, I can still clearly see my body. Nothing has changed, but that
the part of my brain which receives data from my eyes has temporarily
stopped working. Luckily, I am hooked up to a camera, which replaces the
function of the eyes, and a computer, which now hosts the software
needed to interface between eyes and cognitive and reflexive areas of
the brain. The technician inserts another wire into the top left of my
skull. Now I feel as if I have a third arm. I move the arm on my body,
and it responds as it should. Then I move this new appendage, and see
something wave in from of my new field of vision. It is a robot arm,
identical in shape and construction to my natural arm. When the
inhibitor is turned on, it prevents my brain from sending signals to my
muscles, and I am no longer able to control my fleshy right arm. But I
can still quite easily control both my left arm and the robot arm to the
right of my field of vision. This continues — left arm, left leg, right
leg, diaphragm — until every part of my brain has been mapped,
transferred, and inhibited. Now comes the final moment. Up to now, I
have been physically connected to all of my wetware. I could have, at a
moment's notice, regained control of any part of my brain. But now the
technician removes the first wire he inserted. My visual cortex is
completely dormant and no longer connected to the computer, yet I can
still see my body — I am still connected to my body — and I can still
feel every part of it as if I'm still in my brain.
And so on. In this way, there would be no point at which I could feel
“myself” “die” or disappear. I would simply phase from one substrate to
another, and be awake and (at least nominally) in control the entire
time. Of course, none of this might ever be possible, but it’s not
completely unreasonable.
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