In modern science
we've gotten used to the idea that science doesn't offer meaning in the way
that institutional religions did in the past. This idea that modernity puts us
in a world without meaning - philosophers have banged on about this for a
century-and-a-half - may be completely wrong. We may be living on an
intellectual building site, where a new story is being constructed. It's vastly
more powerful than the previous stories because it's the first one that is
global. It's not anchored in a particular culture or a particular society.
This is an origin
story that works for all humans. Ourstory sums over vastly more information
than any early origin story. This is very powerful stuff. It's full of meaning.
We're now at the point where, across so many domains, the amount of information
- of good, rigorous ideas - is so rich that we can tease out that story. We
need such a history of humanity, because as long as we teach history as a story
of competing tribes, wars of all kinds are going to repeat themselves.
What would it look
like? Chronologically, most of human history was spent in the Stone Age. In Africa,
the Stone Age survived until very recently. To talk about human evolution, we
have to go beyond the borders of the history discipline and talk about how
humans evolved. To do that seriously we have to talk about the origins of life,
which means talking about how the planet was formed and getting into geology. And,
to do that seriously, we have to look at astronomy; with the Big Bang.
Can we tell Ourstory
that begins with the origins of the universe? That would be the way to give a
sense of humanity, as a single species facing shared problems in the modern
world. We need to cross the divide between the sciences and the humanities. But,
what happens at that borderline? The claims of science are powerful today, but
also, they're not absolute. Most of us have a simple epistemology with two
default positions: either science is right, and therefore everything before
science is wrong, or they're all stories. The origin stories of the past are
not completely wrong either. However, we need to manoeuvre into a more complex (and
unstable) central position.
What is this
cosmos we’re part of? What does it mean to be human? What is our place in the
cosmos? Are we a large part of it? Are we central? Are we marginal? Is there
anything distinctive about humans? What sort of story would emerge at the end
of this? In the past, in all cultural traditions, we had unifying stories. Currently,
we don't seem to have one in the modern world. As it turns out, there is a
coherent story that’s possible though.
We can tell it across
eight thresholds of increasing complexity. The first is the Big Bang itself,
the creation of the universe. The second is the creation of stars. Once you
have stars, already the universe has much more diversity. Stars have structure;
galaxies have structure. You now have rich gradients of energy, of density, of
gravity; so you've got flows of energy that can now build more complex
things.
Dying stars give
you the next threshold, which is creating a universe with all of the elements
of the periodic table, so it's now chemically richer. You can now make new
materials. You can make the materials of planets, moons and asteroids. On some
planets, particularly rocky planets, you get an astonishing chemical diversity.
The reason is because most of the hydrogen and helium from the inner solar
system was driven away by the solar wind. In the inner planets you're left with
an environment that's remarkably chemically rich, and that's the environment
that eventually gave birth to life on this planet. The odds are increasing that
the universe is crawling with life.
Life is a fifth
threshold; planets are a fourth threshold. One of the wonderful things about
this story is that, as we widen the lens, we’re increasingly convinced that all
these very big questions that we're asking (that seem impossible) begin to look
manageable from the large scale. Organic life itself, for example. With life, we
get complex entities appearing in extremely unstable environments. They need to
be able to manage energy flows to maintain their complexity. As their environments
are constantly changing, they need some mechanism for detecting changes. That is
the point at which information enters Ourstory.
Something like
choice happens, because no longer do living organisms make choices
mechanically; they make choices in a more complex way. They can't always
guarantee that they're going to make the same choice. That's where natural
selection kicks in. There are billions of organisms making different choices, and
natural selection allows the right choices to get preserved within the lineage.
Making the right choices matters. That means, in a sense, that purpose has arrived
at this point. That is why living organisms are so complex; and why they give
the appearance of purpose.
Human beings (the 5th
threshold of increasing complexity) are the only organisms that can ask the
question: what makes humans different? It's a question that the humanities have
struggled with for centuries. Within this very broad narrative of Ourstory,
there's a fairly clear answer to that. All living organisms use information to
control and manage their energy flows. Biologists call it metabolism. When a
new species appears, its numbers will increase until it's using the energy that
its particular metabolic repertoire allows it to fill.
Yet, look at
graphs of human population growth and something utterly different is going on.
Here, you have a species that appears in the savannah lands of Africa, but it
doesn't stay there. During the Stone Age - over perhaps 200,000 years - we can
watch our species, certainly in the last 70,000 years, slowly spreading into
new niches. By 10,000 years ago our species had spread around the world. This
is utterly new behavior. This is a species that is acquiring more, and more and
more information. That is the key to what makes us different.
We can ask what it
is that allows us not to be locked within a limited, metabolic repertoire, but
to keep expanding that repertoire. There may be a very simple answer. There's
got to be one thing that, like a key, unlocks a door. I suspect it's
linguistic. We know that information does not seem to accumulate generation by
generation in other species. If it did, we would see evidence of it. We would
see a species that was gradually widening its niche. Thus, humans have crossed
a linguistic threshold. It's as if suddenly human language is more efficient;
information accumulates faster than it's lost.
That means
something profound. It means we're the first species in 4 billion years in
which information accumulates across generations, through the cultural
mechanism, not through the genetic mechanism. The cultural mechanism, of
course, is orders of magnitude faster than the genetic mechanism. That is the
foundation for explaining everything that makes us different. If we add in that
more information for a living organism gives us more control over resources and
energy flows, then what we're doing is watching a species whose control over
the energy flowing through the biosphere increases, and increases at an
exponential rate.
If such species
exist on other planets, we can guarantee one thing: hang around for a few
hundred thousand years, and there will be something like an Anthropocene. This
species will dominate flows of energy on its planet. That's where we are right
now. We're managing these colossal flows of energy; we're benefitting from
them; they can make us staggeringly wealthy; they also give us a buffer against crude
needs that is something utterly new, but they are on such a scale that they're
beginning to disrupt old biospheric cycles - the carbon cycle, the nitrogen
cycle - they're disrupting biodiversity.
So, can we
maintain the good things, the things that make a good life for us as a result
of our increasing control of energy, without undermining the Goldilocks conditions
(not too hot, not too cold) that allow us humans to build this extraordinarily
complex civilization? One of the reasons why this approach to Ourstory, this
attempt to put everything together, is so important is partly because
specialization, for all its achievements in the last century-and-a-half - and
they've been staggering - is part of the reason why so many people struggle.
One of the things that Ourstory can do, is help us see that there is a coherent
narrative across the ages.
If I'm right, then
telling Ourstory is about our place in space and time. In this sense, it's a
mapping process. It tells us where we are. And that mapping process, which is
present in all origin stories is powerful and meaningful because it tells us
who we are. By doing that, it tells us what possibilities are open to us. It
explains why communities are so various, because each community accumulates
information in slightly different ways. It explains why, when communities meet,
the synergies are so powerful. It's the source of civilization. It's what makes
humanity.
If that's right, to explain what makes us different, we need to distinguish between two problems. One is how our ancestors crossed that linguistic threshold. Explaining that is a fiendishly complex, technical problem that involves a vast range of evidence, some of it neurological, some of it archaeological, some of it anthropological. The second problem is much more manageable: defining the threshold itself, what it changed. That we can do, and we can do quite simply.
The
future of the human narrative is anything but dark.