All physical systems can be thought of as registering and processing information, and how one wishes to define computation will determine your view of what computation consists of.
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Other Quotes by "Seth Lloyd"

Nothing in life is certain except death, taxes and the second law of thermodynamics.
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According to the standard model billions of years ago some little quantum fluctuation, perhaps a slightly lower density of matter, maybe right where we're sitting right now, caused our galaxy to start collapsing around here.
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Science consists exactly of those forms of knowledge that can be verified and duplicated by anybody.
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Similarly, another famous little quantum fluctuation that programs you is the exact configuration of your DNA.
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In order to figure out how to make atoms compute, you have to learn how to speak their language and to understand how they process information under normal circumstances.
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