Scientists eye lab-grown brains to replace silicon-based computer chips

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Scientists eye lab-grown brains to replace silicon-based computer chips
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Chips are fast approaching physical limits. Replacing them with minibrains might be the next step forward.

, the AI that bested the world’s top Go player in 2017, as an example of a computationally superior program. “[It] was trained on data from 160,000 games. A person would have to play five hours a day for more than 175 years to experience these many games.”

But AlphaGo’s impressive statistical capabilities come with a hefty cost—the amount of energy required to train itas it takes to keep an active adult human alive for about 10 years. A human brain, by comparison, is far more efficient, with around 100 billion neurons across 1015 connection points—“an enormous power difference compared to our current technology,” argues Hartung.

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