No question Gaia hypothesis originator James Lovelock's book, A Rough Ride to the Future,
is provocative and interesting, but I do get the sense that, at 95, he
has come to see himself as an oracle of elder wisdom. This mostly takes
the form of a certain degree of contrariness, coupled with a healthy
prescription for continuing skepticism. He has changed his views on
Climate Change, to the point that he stands in opposition to a lot of
the conventional wisdom about what should be done.
He
points out, probably quite correctly, that the complex
partial-differential equation dynamic models based on less than ideal
data which have been used to model the effects of Climate Change are
just not reliable. Already, they have not predicted (both up and down)
changes that have occurred since 2000. So, we are, in effect, flying
blind.
He
is not a Climate Change denier, though. He says that climate change
induced by higher levels of CO-2 is unpredictable, but unavoidable. He notes that it has been the "goal" of Gaia
feeback systems since at least the beginning of the current 1 million
year ice age cycle, to minimize CO-2 in order to keep the world as cold
as practicable, because that actually enhances the biodiversity and flourishing of Earth life. It is simply already
impossible to prevent a significant disruption of the Earth's
pre-industrial climate. That disruption is already well underway, as we
all can see around us if we're willing to take in the obvious. He takes a
very dim view of weaning the world from carbon in favor of renewable
energy, which he says is not efficient or practical (except nuclear
power). Not that many of his colleagues in the climate
science/ecological sciences communities agree with THAT. Mostly, in my
opinion, he is highly unrealistic about the prospects of moving large
populations into new regions. He thinks flooding of places like
Bangladesh is inevitable, and that people will have to migrate.
Maybe
he's right, but after criticizing the models being used to game out
climate change, he pretty much offers only intuition in place of them
(and this from the guy who invented Daisyworld, which is a mathematical
model of how the biosphere regulates climate!). He says that belief by
non-scientifically trained people that rolling back CO-2 to 18th century
levels is even possible, or that it would result in the immediate shift
back to the climate regime of that time, is just naive.
Personally,
I suspect, as I've said before, that he is right that climate change is
not going to be easily controlled, is unpredictable (we might get
lucky; but we have to allow for the likelihood that we will be very unlucky), and that we are going to almost certainly have to do mitigation, including geoengineering, eventually.
He mentions the possibility that private actors may take matters into
their own hands, citing, as an example, the invention of technology
(already done) that can aerosolize seawater on a pretty large scale.
Attached to ships, it could be possible to dramatically increase the low
level cloud cover over the oceans. But what effect that would
have is not really predictable either; it could actually cause drought
in areas currently producing much of the world's food, for example. But I
suspect that when, not if, things get bad in certain places in
the world where the powerful hang out, a lot of questionable and
possibly dangerous things will be done. Hence, a rough ride indeed is
before us.
All
of this is in the context of his view that technological evolution
since 1700 or so has outstripped DNA based biological evolution, and
even superseded it as the dominant form of life-change. We don't
perceive this clearly, because we are inured to the pace of change. But
the rate of rapid evolution shows signs of leveling off, indicating that
a new steady state is emerging. Climate change is part of that. But
that doesn't mean that the next few decades won't be extremely
disruptive. To the contrary, they almost certainly will be.
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