Is continuity in terms of personal identity an illusion?
Recently had a convo with someone who thought that continuity in terms of identity is an illusion and that we exist for a fraction of a second while inheriting previous memories. To me that view seems kinda off though I didn't really have a counter argument for it. They gave me supporting cases like:
>In the case of “bodily continuity”, which seems closest to your position, we can ask questions like what if the transporter uses your atoms; literally fires your atoms across space and reforms them into you.
If that’s you again, then why did using the same atoms make a difference? What do those atoms “hold”?
If not, then what is the person at the destination lacking? Bear in mind this would also mean that even with perfect knowledge of the current state of the universe I cannot tell if you are alive or dead because I can only know that by knowing the process by which your atoms arrived at where they are. Which is a whole can of worms in itself.
Or:
>This is another issue with bodily continuity (in fact with most solutions to the transporter problem) – how can we know? If I have a massive seizure that causes my brain waves to stop for several seconds, how can we know whether a person died and a new person was born, or it’s just the continuation of the same consciousness?
Obviously from a practical point of view we tend to assume being qualitatively similar enough means being numerically the same person, but that’s just something for convenience – we can’t know that it’s true.
One solution I think that was given to me is Process Philosophy, seeing us more like dynamic events rather than static objects, which if that is true would seem to negate a lot of the problems about continuity. Though I'll confess, identity is complicated (thinking about it hurts my head) and whether it's psychology, physical, or both, the concept seems to depend on how you define it. But is it an illusion?
Personally I think continuity and identity seem more like intuition like our understanding of what is alive.
They drew some conclusions as well:
>Agree that it’s tricky. As I say, we have a “common-sense” description of what continuity means and how death will be permanent, but it falls apart in all kinds of hypotheticals. We’re faced with just a few implausible or uncomfortable possibilities:
>If the pattern of brain structure = continuity, then it implies we’re all immortal; it’s just a matter of time before some atoms come together into the right configuration, in this universe or another. And, from your perspective, this will have happened instantly.
>We specify that it must be the same atoms. This actually doesn’t help because we could still say that eventually the specific atoms of your brain will come back together in a heat death universe. In fact all we’ve done is add the problem of needing to explain what’s so special about my atoms.
>Just say that continuity is an illusion. You, me, everyone, exist for a fraction of a second only, but have the illusion of continuity by virtue of inheriting memories.