These are excerpts and elaborations from my book "The Nature of Consciousness"
A Linguistic Origin Several scientists believe
that consciousness somehow owes its existence to the fact that humans evolved
in a highly connected group, i.e. that it is related to the need to communicate
with or differentiate from peers, i.e. it is closely related to language. The Austrian philosopher
Karl Popper thought that, phylogenetically speaking, consciousness emerged
with the faculty of language, and, ontogenetically speaking, it emerges during
growth with the faculty of language. The US biologist George
Herbert Mead believed that consciousness is
a product of socialization among biological organisms. Language provides the
medium for its emergence. The mind is socially constructed, society constitutes
an individual as much as the individual constitutes society. According to Mead, the mind emerges through a process of internalization of the social
process of communication, for example by reflecting to oneself the reaction of
other individuals to one's gestures. The “minded” organism is capable of being
an object of communication to itself. Gestures, which signal the existence of a
symbol (and a meaning) that is being communicated (i.e., recalled in the other
individual), constitute the building blocks of language. "A symbol is the stimulus whose
response is given in advance".
Meaning is defined by the relation between the gesture and the
subsequent behavior of an organism as indicated to another organism by that
gesture. The mechanism of meaning is
therefore present in the social act before the consciousness of it
emerges. Mead thinks that consciousness
is not in the brain, but in the world. It refers to both the organism and the
environment, and cannot be located simply in either. What is in the brain is the process by which the self gains and
loses consciousness (analogous to pulling down and raising a window shade). The US computer scientist
Michael Arbib argued that first language
developed, as a tool to communicate with other members of the group in order to
coordinate group action; then communication evolved beyond the
individual-to-individual sphere into the self sphere. The British psychologist
Nicholas Humphrey agrees that the function of
consciousness is that of social interaction with other “consciousnesses”.
Consciousness gives every human a privileged picture of her own self as a model
for what it is like to be another human.
Consciousness provides humans with an explanatory model of their own
behavior, and this skill is useful for survival: in a sense, the best
psychologists are the best survivors. Humphrey speculates that, by exploring
their own selves, humans gained the ability to understand other humans; and, by
understanding their own minds, they understood the minds of the individuals
they shared their life with. The US anthropologist
Terrence Deacon takes a "semiotic" approach to consciousness. He
distinguishes three types of consciousness, based on the three types of signs:
iconic, indexical and symbolic. The first two types of reference are supported
by all nervous systems, therefore they may well be ubiquitous among animals.
But symbolic reference is different because, in his view, it involves other
individuals, it is a shared reference, it requires the capability to
communicate with others. It is, therefore, exclusive to linguistic beings, i.e.
to humans. Such symbolic reference includes the self: the self is a symbolic
self. The symbolic self is not reducible to the iconic and indexical
references. The self is not bounded within a body, it is one of those
"shared" references. Back to the beginning of the chapter "A History of Consciousness" | Back to the index of all chapters |
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