My previous post started with
Whoops, it’s been over a month since I finished my last post
and ended with
Hopefully the next update comes sooner!
Well that’s depressing. At least I managed to keep the gap down to under a year. Barely.
As it turns out, indulging in outrageous philosophical hand-waving has not proven a particularly motivating way to write. So let’s mostly ignore my “brief detour” on constructing the mind, and go back to the original question, which basically boiled down to answering the Cartesian challenge to Hume. Frankly, I don’t have an answer. Self-awareness is one of those things that I just don’t even know where to start with. So I’m going to ignore it (for now) and sketch out the rest of my solution in broad strokes anyways.
First a refresher: I’m still pretty sure the brain is an open, recursively modelling subsystem of reality. It does this by dealing in patterns and abstractions. If we ignore self-awareness, then a fairly solipsistic view presents itself: the concept of a person (in particular other people) is just a really handy abstraction we use to refer to a particular pattern that shows up in the world around us: biological matter arranged in the shape of a hominid with complex-to-the-point-of-unpredictable energy inputs and outputs.
Of course what exactly constitutes a person is subject to constant social negotiation (see, recently, the abortion debate). And identity is the same way. Social theorists (in particular feminists) have recognized for a while that gender is in effect a social construct. And while some broad strokes of identity may be genetically determined, it’s pretty obvious that a lot of the details are also social constructs. I call you by a certain name because that’s the name everybody calls you, not because it’s some intrinsic property of the abstraction I think of as you.
Taking this back to personhood and identity, the concept of self and self-identity falls neatly out of analogy with what we’ve just discussed. The body in which my brain is located has all the same properties that abstract as person in the 3rd-party. This body must be a person too, and must by analogy also have an identity. That is me.
Throw in proprioception and other sensory input, and somehow that gives you self-awareness. Don’t ask me how.
My original post actually started with reference to Parfit and his teleportation cases so for completeness’s sake I’ll spell out those answers here as well: as with previous problems of abstraction, there is never any debate about what happens to the underlying reality in all those weird cases. The only debate is over what we call the resulting abstractions, and that is both arbitrary and subject to social negotiation.
Until next time!
edit: I realized after posting that the bit about Parfit at the end didn’t really spell out as much as I wanted to. To be perfectly blunt: identity is a socially negotiated abstraction. In the case that a teleporter mistakenly duplicates you, which one of the resulting people is really you will end up determined by which one people treat as you. There’s still no debate about the underlying atoms.