brainless -social- animals ... Options

[Albretch Mueller]

As part of a theory of the semiotic mind-body link which (latest draft) you can find at: hsymbolicus wordpress category semiotics
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I postulate and (try to) prove that mind and body are actually bridged by our semiosis, that there is no actual organ or functional articulation of the link in the brain per se; that consciousness is constructed as a triad in which our selves (each individual carrying a living, reflective brain, neurons, ...), society and our surrounding physical reality participate
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I would like to know about studies on brainless animals; more specifically about brainless -social- animals.
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Ants, very social animals indeed, (while trying to post a link, I got a message reading "You must make more posts before being allowed to post URL's" so search on youtube for "Ants create a lifeboat in the Amazon jungle - BBC wildlife" ( or u tube A042J0IDQK4))
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have eyes and other exteroceptive senses but no real brain (more like a supraesophageal ganglion)
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I wonder how far down (social animals with less and less of a brain) can you go
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Any research or leads on these types of topics you could point me too?
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Thank you
lbrtchx

[equable]

What is most interesting and amazing in ants is their ability to construct small bridges from their own bodies over small water flows so to assure safe migration of their colony over that water barrier. In that case probably some elements of specific type of collective intellect exhibit fact of their existence.