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Building new brains [edit ] (CEREBRO HUMANO COMO MODELO!!!!)

Kurzweil shows that computer power is growing exponentially.

To build an artificial brain requires formulas, knowledge and sufficient computational power,explains Kurzweil. He says "by around the year 2020" a $1,000 personal computer will haveenough speed and memory to match the human brain, based on the law of accelerating returnsand his own estimates of the computational speed and memory capacity of the brain .[17] Kurzweil predicts Moore's law will last until 2020 so current integrated circuits should comeclose to human brain levels of computation, but he says three dimensional chips will be thenext big technology, followed potentially by optical computing , DNA computing , nanotubes , or quantum computing .[18]

Kurzweil feels the best model for an artificial brain is a real human brain, and suggestsslicing up and digitizing preserved human brains or examining them non-invasively astechnology permits. Kurzweil differentiates between scanning the brain to understand it, in ageneric fashion, and scanning a particular person's brain in order to preserve it in exact detail,for "uploading" into a computer for example. The latter is much harder to do, he notes,

because it requires capturing much more detail, but it will eventually happen as well. When itdoes "we will be software, not hardware" and our mortality will become a function of ourability to "make frequent backups" .[19

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Philosophy of mind [edit ]

Kurzweil introduces several thought experiments related to brain implants and brainscanning; he concludes we are not a collection of atoms , instead we are a pattern which canmanifest itself in different mediums at different times. He tackles the mystery of how self-awareness and consciousness can arise from mere matter, but without resolution. Based partlyon his Unitarian religious education Kurzweil feels "all of these views are correct whenviewed together, but insufficient when viewed one at a time" while at the same timeadmitting this is "contradictory and makes little sense" .[10]

Kurzweil defines the spiritual experience as "a feeling of transcending one's everyday physical and mortal bounds to sense a deeper reality" .[11] He elaborates that "just being

experiencing, being conscious is spiritual, and reflects the essence of spirituality". In thefuture, Kurzweil believes, computers will "claim to be conscious, and thus to be spiritual"and concludes "twenty-first-century machines" will go to church, meditate, and pray toconnect with this spirituality .[12]

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