Subjective experience is that thread, and it is the precise and complete meaning of I. And it is also the same thing I, and some but not all other people, mean by the word consciousness.
You can't distinguish between two DanArmaks appearing in sequence (one is the future version of the other), and two appearing together (no necessary relation between them, causal or otherwise). But I can because I am one and will in due time become the other.
Yes, it's magic. In the sense that we don't understand it. We can't even properly define or describe it - that is, we can't describe it in the same framework and terms we use for the physical universe. (Or in any other framework either.) It's not required to explain my behavior in any way. It's completely subjective. That doesn't mean I can just ignore it.
I don't know whether there is or even can be a legitimate explanation or reduction of the phenomenon of consciousness and subjective experience. But I do know the phenomenon is there. The experience is there. The essential difference between the subjective and the objective (and there exists a perfectly valid objective view point of myself, that I can apply to myself - the two things aren't exclusive).
A challenge to all doubters.
Omega comes to you with a proposition - heck, I may be able to do it myself in a few decades. I offer to create N atomically precise clones of yourself on the other side of the planet, and give each one the dollar value of all your assets. You can set N as high as you like, provided there's a value that will make you accept the bargain. The price is that I'll kill you ten seconds later.
I assure you that, from past experience, you will not notice the creation of these clones during the ten seconds you have to live. Your extreme s...
From the dawn of civilization humans believed in eternal life. The flesh may rot, but the soul will be reborn. To save the soul from the potential adverse living conditions (e.g. hell), the body, being the transient and thus the less important part, was expected to make sacrifices. To accumulate the best possible karma, pleasures of the flesh had to be given up or at least heavily curtailed.
Naturally the wisdom of this trade-off was questioned by many skeptical minds. The idea of reincarnation may have a strong appeal to imagination, but in absence of any credible evidence the Occam’s razor mercilessly cuts it into pieces. Instead of sacrificing for the sake of the future incarnations, a rationalist should live for the present. But does he really?
Consider the “incarnations” of the same person at different ages. Upon reaching the age of self-awareness, the earlier “incarnations” start making sacrifices for the benefit of the later ones. Dreams of becoming an astronaut at 25 may prompt a child of nine to exercise or study instead of playing. Upon reaching the age of 25, the same child may take a job at the bank and start saving for the potential retirement. Of course, legally all these “incarnations” are just the same person. But beyond jurisprudence, what is it that makes you who you are at the age of nine, twenty five or seventy?
Over the years your body, tastes, goals and the whole worldview are likely to undergo dramatic change. The single thing which remains essentially constant through your entire life is your DNA sequence. Through natural selection, evolution has ensured that we preferentially empathize with those whose DNA sequence is most similar to our own, i.e. our children, siblings and, most importantly, ourselves. But, instinct excepted, is there a reason why a rational self-conscious being must obey a program implanted in us by the unconscious force of evolution? If you identify more with your mind (personality/views/goals/…) than with the DNA sequence, why should you care more for someone who, living many years from now will resemble you less than some actual people living today?
P.S. I am aware that the meaning of “self” was debated by philosophers for many years, but I am really curious about the personal answers of “ordinary” rationalists to this question.