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- From: connolly@piglet.cs.umass.edu (Christopher Ian Connolly)
- Newsgroups: comp.ai.philosophy
- Subject: Re: Searle's World and Computers
- Message-ID: <57937@dime.cs.umass.edu>
- Date: 22 Dec 92 22:23:14 GMT
- References: <1gvonvINNil4@fbi-news.Informatik.Uni-Dortmund.DE> <Bznw6n.KJz@iat.holonet.net>
- Sender: news@dime.cs.umass.edu
- Reply-To: connolly@piglet.cs.umass.edu (Christopher Ian Connolly)
- Distribution: na
- Organization: University of Massachusetts, Amherst
- Lines: 37
- Originator: connolly@piglet.cs.umass.edu
-
-
- In article <Bznw6n.KJz@iat.holonet.net>, ken@iat.holonet.net (Ken Easlon) writes:
- |> For example, they don't teach you in school that the brain is the dumbest
- |> organ in the body.
-
- I don't think they're likely to start, either.
-
- |> As we get older, brain mass stays relatively constant, but we keep loosing
- |> neurons and DNA.
-
- Some neuroscientists (e.g., Calvin and Edelman) argue that this cell loss
- actually represents an *accumulation* of information...the darwinian view
- of brain development.
-
- |> Surviving neurons just grow bigger. This produces severe
- |> bandwidth limitation problems in the cellular machinery. One nucleus with
- |> a limited capacity for transmitting instructions is asked to service a
- |> larger and larger cell.
-
- You're claiming that the increase in cell size limits the "bandwidth", and
- then somehow you link that with the nucleus. It seems to me that the
- nucleus-ribosome "bandwidth" isn't affected at all here. What *is*
- affected is the transport time for various important substances
- such as ion channels, ion pumps, actin and neurotransmitters. Even so, this
- appears not to matter in normal brains.
-
- |> Almost all of the computing power in the human body is at the intra-
- |> cellular lever. A very small percentage is at the macro-cellular lever,
- |> and some of that is carried out by neuron firings.
-
- You're pulling our levers, right? What about gap junctions in liver,
- the immune system, hormones, etc...??
- --
- - - - - - - -
- Christopher Ian Connolly connolly@cs.umass.edu
- Laboratory for Perceptual Robotics wa2ifi
- University of Massachusetts at Amherst Amherst, MA 01003
-