Is the Brain a Computer?

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Dennis Hackethal’s avatar
Dennis HackethalOP, about 1 year ago·#215· Collapse

Anything that processes information is a computer.

The brain processes information.

Therefore, the brain is a computer.

Nick Willmott’s avatar
Nick Willmott, about 1 year ago·#467· Collapse

A ribosome processes information. A ribosome is not a computer.

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Dennis Hackethal’s avatar
Dennis HackethalOP, about 1 year ago·#498· Collapse

It is under that definition. Not the kind of computer people traditionally think of when they hear the term, like a laptop or desktop, but it’s a computer nonetheless.

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Nick Willmott’s avatar
Nick Willmott, about 1 year ago·#512· Collapse

Cool. Not sure I can criticise a syllogism. I can try push the definition ad absurdum...
- A light switch processes information. Therefore, a light switch is a computer.
- An OR gate processes information. Therefore, an OR gate is a computer.

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Dennis Hackethal’s avatar
Dennis HackethalOP, about 1 year ago·#513· Collapse

Yes re OR gate.

Re light switches: as I understand it, they either inhibit or permit the flow of electricity. But there’s no information there, let alone processing of information. So the example is flawed, I think.

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Nick Willmott’s avatar
Nick Willmott, about 1 year ago·#548· Collapse

I'll have to tap out sorry. Possibly talking on different trajectories.

If an OR gate is conceived as a computer then the initial post about the brain being conceived as a computer is a banality / an uninteresting syllogism.

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Dennis Hackethal’s avatar
Dennis HackethalOP, about 1 year ago·#558· Collapse

You may consider it banal but is it false?

An OR gate takes two bits of information and transforms them into a single bit of information by following a specific rule. It clearly processes information. And if that’s true for an OR gate, why not for the brain?

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Nick Willmott’s avatar
Nick Willmott, about 1 year ago·#565· Collapse

You're not understanding me. I'm not trying to argue such things don't process information.

I can't argue against "Is the brain a computer?" + "Anything that processes information is a computer" combination. If we're taking an essentialist definition of the word computer then we should ditch the term and the the title of the page should just be "Does the brain process information?" - which I have no interest in objecting against.

My original attempted criticism was against the statement that anything processing information is a computer. (Taking a deflationary concept of a computer is not what I presumed was meant in the title of the discussion).

Parking the word computer aside, based on the resultant thread, more interesting questions to me are:
1) What is the demarcation between something that processes information and something that does not?
2) What is the demarcation between something that processes information and the human brain?

Tom Nassis’s avatar
Tom Nassis revised about 1 year ago·#567· Collapse
2nd of 2 versions

Nick, I think your criticisms are indirectly addressing my concerns. Would you say the framing of "The brain is a computer" does more to obscure and mislead than to illuminate?
We can invoke the word "computer" to say that the brain processes information.
But if that's all we're saying, then I'd say the word "computer" brings so much irrelevant baggage that it might be counterproductive.
Is this why you object to using the word "computer?"

Nick Willmott’s avatar
Nick Willmott, about 1 year ago·#572· Collapse

I'm not objecting to the word computer per se, I just don't think a deflationary sense of the word is of any interest for comparision to the brain. The word could be of use to help illuminate what the brain is (and is not), but the comparison I sense would have to be with something more like a general purpose computer / universal computing device.

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Dennis Hackethal’s avatar
Dennis HackethalOP, about 1 year ago·#575· Collapse

It’s not a comparison. The brain literally is a computer.

Criticism of #572