What I Believe But Cannot Prove: Speculations on
Evolutionary Development and the Cosmic Purpose of
Accelerating Change, © 2005 by John Smart
(This article may be reproduced for noncommercial
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Overview
I wrote this 1,000 word piece as a personal response
to the 2005 World Question at Edge.org: "What Do You
Believe is True Even Though You Cannot Prove It?"
Belief plays an important role in all our lives, and
this question brought out a number of the beliefs
underlying my own intution with regard to
accelerating change.
Article
Like the living systems within it, I believe our
universe utilizes two unique processes of change:
evolution and development. I also believe our
universe follows a developmental plan to do some
generalized form of computing, and that its emergent
intelligences are each evolutionary experiments to
this end. Though imperfect, I think
universe-as-living-system and universe-as-computer
are among the best analogies available today.
In life, evolutionary and developmental processes
share infrastructure and information, yet have
independent, complementary mechanisms and unique
dynamics. Evolutionary processes are nonlinear,
chaotic and poorly predictable, while developmental
ones are convergent, cyclic, and can be quite
predictable, if you know where to look. Both exhibit
heritability and variation. Scholars use the phrase
"evolutionary development" (or "evo-devo") for this
yin-yang model of change in biological systems.
Astrophysics predicts much about the development of
simple, non-generative physical structure in the
universe (e.g., entropy, black holes, and the
accelerating universe). But today's physics is
largely silent on the future of complex evolutionary
developmental structure, such as life and
intelligence. There are a number of "cosmic
questions" one might ask with regard to the latter
subject. Let me share four of these questions here,
questions that have interested me for over thirty
years. The tentative answers I have come to, each
presently unproven beliefs, have nevertheless shaped
the scientific interests and intuition of my adult
life.
First, why does evolutionary development of novel
complex physical structure, from the slow emergence
of galaxies to the rapid advent of today's
computers, continuously accelerate over the last
half of our universe's lifespan? Carl Sagan was
perhaps the first to popularize this idea in his
"Cosmic Calendar" metaphor in The Dragons of Eden,
1977. More recent treatments you might enjoy are
Richard Coren's The Evolutionary Trajectory, 1998,
Laurent Nottale, Jean Chaline, and Pierre Grou's Les
Arbres De L'Evolution (The Trees of Evolution),
2000, Eric Chaisson's Cosmic Evolution, 2001, and
Ray Kurzweil's The Age of Spiritual Machines, 1999
and The Singularity is Near, 2005. Is cosmic
acceleration an observer-selection bias? Or is it a
developmental trajectory for intelligence? I think
the latter, as do many youth today (ask them!).
Belief that acceleration will continue is good
intuition.
Second, why do our most complex newly emergent
systems use dramatically less physical resources
(matter, energy, space, and time, or MEST) to do
their "computing"? In other words, why has dominant
universal computation moved from galaxies to
replicating solar systems to the living surface of
special planets to the animals on these planets, to
the talking animals, to their even faster and more
efficient technology? Expecting further resource
efficiency is today only a belief, yet industry
invests billions in this expectation annually.
Third, why do rates of emergence during the first
half of universal history stand in inverse to the
second half? For billennia after the Big Bang,
emergence takes increasingly longer, as physical
processes occur with decelerating energy and
interaction rates in an expanding cosmos. Juxtapose
this to accelerating and increasingly local
self-organization in the second half, as in Earth's
six billion year history, and we discern a U-shaped
curve for rates of change. In biology, global
deceleration occurs as seed creates soma (body), and
later, multi-local acceleration as the mature soma
generates new seeds. Is local intelligence a
universe seed? Are we part of a universal
developmental cycle? If applicable, this analogy may
offer deep insight into the future role of local
intelligence.
Fourth, if hospitable conditions for organic life
are ubiquitous, as many astrobiologists suspect, and
if life must on average develop complexity at
accelerating rates, why is our visible universe and
galaxy not saturated with observable intelligence?
This question, Fermi's Paradox, led me to surmise
that outer space is a "rear view mirror" on the
growth trajectory of universal intelligence. Our
visible universe is a history of older, slower, and
simpler computational systems that came before us,
and perhaps it cannot tell us what comes next.
I suspect universal intelligence gravitates to the
microscopic universe, into the denser and
computationally richer environments of "inner
space," not outer space. Consider the trillions of
connections in a human brain, or the billions of
even faster and more compact (in free energy rate
density, as Chaisson observes) logic gates in our
still primitive electronic brains, and the
astounding simulations of external and internal
reality they create. I expect an "Einstein of
Information Theory" will eventually prove, using
evolutionary developmental physics, that progeny
computing systems in maturing universes must become
relentlessly more local, going from chemo to bio to
techno to cyber, and from outer to inner space.
Eventually, they may transcend the fabric of what we
call physical reality, into some multiverse or
hyperspace whose presence our current theories can
only hint at.
In the nearer term, we may soon transition from our
information age to a symbiotic age, where computers
engage with us in a "human-level" of dialog, through
a linguistic user interface ("LUI", pronounced "loo-ee"),
simplistic at first. Statistical natural language
processing (NLP), through search platforms like
Google, utilizing exponentiating stores of archived
human data, may incrementally deliver a crudely
human-level LUI over the next generation, or perhaps
longer depending on our foresight and resolve. Soon
after, to better serve us, I believe our computers
will be modeling our internal states ("personality
capture") and mapping and sharing our preferences
(the "valuecosm"). I see many potentials for damage
and dehumanization in early versions of these
developments, but believe their ultimate effect will
be profoundly empowering.
Meanwhile, in biological space, hierarchy and
development theory suggest unseen limits on our
species' capacity for further genetic complexity
generation. Our species' newly-discovered genetic
homogeneity, by comparison to other mammals, may
exist not because of mass extinction (e.g., Lev
Zhivotovsky et. al., 2003) but due to decreasing
value of human genetic variation after language
emerged. I suspect language was developmentally
inevitable, but our genes blundered randomly into
it, using evolution. Once complex mimicry language
is present, the most important local computation
apparently occurs in our collective semiotic mind,
and increasingly, in our artifacts. If further
evolutionary variation must create many semiautistic
mutants for every occasional improvement, I suspect
selective pressures would act increasingly against
such variation as linguistic societies emerge. Such
unproven developmental "path dependency" of the
human genome would make sense to me in a world where
biological change, in the human sphere, has become
so slow as to be future-irrelevant by comparison to
our technological prostheses.
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