These are excerpts and elaborations from my book "The Nature of Consciousness"
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Are We Immortal? Ultimately,
it depends on ones definition of identity. If I build an exact copy of an
object, is it the same object? In the case of inanimate matter, the
temptation is to answer that a copy is just that: a copy. But things assume a
more sinister look when dealing with brains. If I build an exact copy of your
brain, which presumably yields the same mental life as yours, is that copy
you? Does identity require those specific atoms in that specific place, or
only the same kind of atoms and the same way they are related? It is likely that only a finite number of brains are possible, because brains are self-organizing systems, i.e. they are systems that tend to happen at certain attractive configurations while shunning many others. No matter how complex the brain is, there are probably only so many configurations that realize a stable system that works like a brain. In other words, some brains just cannot exist. If that is true, then as
long as life repeats itself on an Earth-like planet, you are likely to be
eventually rebuilt again, i.e. to live again. Assuming that the universes
life is infinite, i.e. that it will exist forever and ever, then the odds that
it will again reach (somewhere sometimes) the conditions present on today's
Earth are significant, and thus your brain, given enough time (which is in vast
supply in eternity), is likely to be created again. Not only once, but infinite
times. Will that be really you,
or just something with the exact same genes and brain that you have now? Back to the beginning of the chapter "Self" | Back to the index of all chapters |
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