John,
Do you really mean:
Eventually, all methods of
sensing, reasoning, and acting evolved
from methods of message
passing among cells and colonies of cells.
John
My limited understanding of biochemistry is that “signaling”
would be a better word than “message passing”; a message usually
has some content other than just its presence at the receptor. IOW, there
is no diversity of information from one message to another, just the appearance
of the chemical that wiggles through the cell membrane and completes the stalled
reaction that tells other cellular components to go or no go.
In that sense, its more like a single trigger rather
than an information carrier with attached codes. My understanding
(correct me if its wrong) is that all information carrying is done by DNA and
RNA.
Which indicates that there may be storage in the
brain, nerves, organs, or elsewhere of what might truly be called messages, but
the message would only be stored in nucleic acid sequences.
-Rich
Sincerely,
Rich Cooper
EnglishLogicKernel.com
Rich AT EnglishLogicKernel DOT com
9 4 9 \ 5 2 5 - 5 7 1 2
-----Original Message-----
From: ontolog-forum-bounces@xxxxxxxxxxxxxxxx
[mailto:ontolog-forum-bounces@xxxxxxxxxxxxxxxx] On Behalf Of John F Sowa
Sent: Friday, October 12, 2012 1:28 PM
To: ontolog-forum@xxxxxxxxxxxxxxxx
Subject: Re: [ontolog-forum] Slime molds navigate mazes
My earlier note mentioned the way single-celled
organisms communicate
by generating and interpreting chemical signs.
More recently, the Nobel prize in chemistry "has
gone to two US
researchers whose work shed light on how the billions
of cells
in our body sense their environments."
Some excerpts from
http://www.bbc.co.uk/news/world-19894971 :
> the receptors "serve as the gateway to the
cells for many
> different neurotransmitters and hormones in our
body".
>
> They capture signalling molecules both in healthy
bodies and
> are the target for half of all pharmaceutical
drugs.
>
> "They are crucially positioned to regulate
almost every known
> physiological process in humans. As physicians,
what we need
> to do in cases of disease is regulate the
activity of these,
> like adrenaline, as you heard, serotonin, and
dopamine,"
> Dr Lefkowitz added.
In effect, all plants and animals evolved from
colonies of single
cells that became more specialized and more tightly
integrated.
Eventually, all methods of sensing, reasoning, and
acting evolved
from methods of message passing among cells and
colonies of cells.
John
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