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“It is, I think, particularly in periods of acknowledged crisis that scientists have turned to philosophical analysis as a device for unlocking the riddles of their field. Scientists have not generally needed or wanted to be philosophers”  

 – Thomas Kuhn

It used to be used as a joke, but a well established string theorist, Erik Verlinde,  is challenging the existence of gravity, calling it an “illusion” (no word as to whether he is willing to step out of a 95th floor window to test his hypothesis):

The New York Times (Dennis Overbye) – A Scientist Takes On Gravity

It’s hard to imagine a more fundamental and ubiquitous aspect of life on the Earth than gravity, from the moment you first took a step and fell on your diapered bottom to the slow terminal sagging of flesh and dreams.

But what if it’s all an illusion, a sort of cosmic frill, or a side effect of something else going on at deeper levels of reality?

So says Erik Verlinde, 48, a respected string theorist and professor of physics at the University of Amsterdam, whose contention that gravity is indeed an illusion has caused a continuing ruckus among physicists, or at least among those who profess to understand it. Reversing the logic of 300 years of science, he argued in a recent paper, titled “On the Origin of Gravity and the Laws of Newton,” that gravity is a consequence of the venerable laws of thermodynamics, which describe the behavior of heat and gases.

“For me gravity doesn’t exist,” said Dr. Verlinde, who was recently in the United States to explain himself. Not that he can’t fall down, but Dr. Verlinde is among a number of physicists who say that science has been looking at gravity the wrong way and that there is something more basic, from which gravity “emerges,” the way stock markets emerge from the collective behavior of individual investors or that elasticity emerges from the mechanics of atoms.

Looking at gravity from this angle, they say, could shed light on some of the vexing cosmic issues of the day, like the dark energy, a kind of anti-gravity that seems to be speeding up the expansion of the universe, or the dark matter that is supposedly needed to hold galaxies together.

….It goes something like this: your hair frizzles in the heat and humidity, because there are more ways for your hair to be curled than to be straight, and nature likes options. So it takes a force to pull hair straight and eliminate nature’s options. Forget curved space or the spooky attraction at a distance described by Isaac Newton‘s equations well enough to let us navigate the rings of Saturn, the force we call gravity is simply a byproduct of nature’s propensity to maximize disorder.

Some of the best physicists in the world say they don’t understand Dr. Verlinde’s paper, and many are outright skeptical. But some of those very same physicists say he has provided a fresh perspective on some of the deepest questions in science, namely why space, time and gravity exist at all – even if he has not yet answered them.

Dr. Verlinde goes into greater detail about his ideas on The Reference Frame, the blog of Czech string theory physicist Luboš Motl. It seems from the comment section that Dr. Motl  is not buying it at all and is politely saying that Verlinde’s hypothesis is complete nonsense ( or, conversely, if true, is so revolutionary that Verlinde upends not only everything we know about physics, but also logic). Here is another expert commentary. Here I cordially invite some of my scientist readers, Shane, Dr. Von and Cheryl to weigh in as well.

Nevertheless, what Verlinde is doing, challenging the unchallenged paradigm, is intellectually very useful.

Sir Isaac Newton who explained gravity’s action did not know what gravity was. We still don’t know what it is even though physicists today have a much wider perspective than did Newton, whose discoveries were the bedrock of not just modern science, but modernity itself. When concepts are accepted blindly we tend to stop thinking of them very deeply. Not everyone, Stephen Hawking has spent a great deal of time pondering gravity as did Albert Einstein in his later years when he groped hopelessly for a unified field theory. Richard Feynman too, was a deep thinker on gravity:

Most of us unfortunately, including most physicists, are not Einstein, Feynman or Hawking.

The difficulty with theoretical physics and questions as fundamental to the order of nature as gravity is that we may be limited in our ability to understand the universe conceptually by the physical, biological, structure of our brains and the scalar level and time frame we inhabit. It is very hard to mentally see outside that box. Our brains can only entertain so many variables or so much complexity at one time and our conceptual imagination is largely influenced by sense perceptions. Mathematics helps us get around our physical limitations as does the processing speed of supercomputers but these crutches themselves refer back to the preferred cognitive avenues of our physical brains.

In thinking about fundamental or overarching phenomena, it is useful to pause and consider that as primates, we may not have been optimized by evolution to easily discern the most significant mechanisms of the physical world when our hominid deep ancestors eluded the apex predators of the Paleolithic Age. With great probability, Verlinde is spectacularly wrong here but his paper, because he is is a credible scientist with an impressive record, is forcing a lot of very smart people to stop and reasses what they know to be true in order to defend it from his heresy – cough…excuse me – his hypothesis 🙂

In doing so, some of them may gain insights of importance that otherwise never might have occurred. Insights that may only be tangentially related to Verlinde’s original idea.

Dissent is the grain of sand that can yield a pearl.

Wiggins  at Opposed Systems Design responds to Kenneth Payne at CI/ KoW:

On Strategists

….Strategy – thinking about how to achieve goals with one’s given resources (in the face of an opponent), which generally requires one to find asymmetric advantages to exploit because one’s resources are finite – is a distinct activity from managing military operations or storming a building. National security strategy requires a familiarity with the nature of military operations and power, but it is not a simple extrapolation from these activities. It is a distinct skill (perhaps, as Watts argues, at least partially an innate skill that can be developed but not completely taught) and the way the U.S. military is currently structured, civilians may be better positioned to cultivate strategic expertise. To go back to Biddle’s example. He compared his career trajectory to that of a military officer. If he’d been a career officer, Biddle was about the age of an O-6, meaning that he’d have – at best – spent a few years in graduate school and perhaps a tour teaching at a service academy. Let’s say roughly six years where one’s primary task was to think, write and read about the elements of strategy. Much of his time would have been spent in managing increasingly large groupings of military force. Biddle, on the other hand, had spent the entirety of his career studying these dynamics.

I find myself largely in agreement with the salient points of my Wohlstetterian amigo, Wiggins. Or, as Herman Kahn once said ” How many nuclear wars have YOU fought, general?”

I am not knocking military expertise with that quote. Civilian appointees, politicians, newspaper editors, political activists or bloggers who have never heard a shot fired in anger have no business telling active duty military personnel which tactical response they should make in the heat of battle or much of the day to day, nuts and bolts, operational business of planning or running a military campaign. That’s why we have military professionals, unlike civilians, they know what the hell they are doing.

Strategy, in the sense of national objectives is quite another matter.

Military expertise, like all forms of expertise, is by definition, narrowly focused. Military people, from the most part, look at strategy from the perspective of how well a proposed strategy fits with the military’s capabilities and operational/doctrinal/cultural preferences and as they move further away from things military into other aspects of the DIME spectrum, their knowledge becomes less certain, their awareness of geopolitical opportunities and costs more vague or prone to error. I find this to be the case especially with economic implications, which are a crucial component of national power.  Strategy is not supposed to be about what the institutional military likes or understands best, but it is difficult for such a systemic bias not to creep in if a nation leaves its formulation of strategy exclusively to dudes in uniform with stars on their shoulders. Nor is that how a democratic system is supposed to work when existential questions are being entertained.

Strategy, unlike expertise, is broad . It applies to more forms of conflict and competition than war alone and requires an ability to connect a panoramic vision with the drill-down focus of application. More than likely, on average, the best strategists will have some expertise in more than just one narrow field and will know a fair amount about many things and have spent a long time thinking matters through from all angles prior to acting. As a consequence, they will be able to shift cognitive perspectives more easily, a fundamental characteristic of strategic thinking.

The costs of a poorly conceived strategy are likewise broad. If tactics are bad, the soldiers on the batlefield will pay the price; if the strategy is bad, we all may pay the price.

Shameless Self-Promotion Department:

In an unusual turn of events, I was the subject of an interview by novelist and historian Steven Pressfield, author of Gates of Fire and The War of Art.

Steve has an interview section on his newly redesigned site and I join a series of bloggers and authors like Instapundit  Glenn Reynolds, Tim O’Brien and Seth Godin who have sat down, in a virtual sense, with Steve for a discussion about writing and creativity. Having done such interviews of others in the past, it was a good experience to be on the receiving end of questions, for which I thank Steve:

The Creative Process: Mark Safranski

SP: Mark, what is the ZenPundit philosophy? Howdo you decide which stories or posts (or even guest bloggers) you want to include? What criteria do you use?

MS: Good question. My philosophy is something I also try to impart in my teaching.

Marcus Aurelius said “Look beneath the surface; let not the several qualities of a thing nor its worth escape you.” Most phenomena have many dimensions, multiple causes and second and third order effects. To deal with all of this complexity, we simplify matters by looking at life through an organizing frame, which we might call a worldview, a schema, a paradigm or a discipline. Whatever we call our mental model, we tend to become wedded to it because it “works.” It helps us understand some of what we are looking at-and in getting good at applying our model, advances us professionally and brings prestige or material rewards. So we will defend it to the death, from all challengers!

That’s getting carried away. Our mental model is just a tool or, more precisely, a cognitive lens. We need to be less attached to our habitual and lazy ways of looking at the world, put down our magnifying glass and pick up a telescope. Or, bifocals. Or, a microscope. Stepping back and applying different perspectives to a problem or an issue will give us new information, help us extrapolate, identify unintended consequences or spot connections and opportunities. When I do analytical pieces, I try to take that approach….

Read the rest here.

The Art of War by Sun Tzu

A BBC podcast on Sun Tzu’s classic The Art of War. Perhaps the most sublime work on strategy of all time ( Hat tip to The Warlord)

Next, and unrelated: 

Via blogfriend Robert Paterson, a new talk by educational and creativity thought leader, Sir Ken Robinson. The ritual TED bowing to Al Gore notwithstanding, if you are interested in education issues, this is a must see video.

Posts have been slow here lately because my real-life workload has temporarily increased. Irrationally, I’ve attempted to compensate for my lack of blogging by ordering yet more books; perhaps I should order more free time instead!

 In any event, esteemed readers, @cjschaefer and @CampaignReboot have requested a full accounting of what is new and here it is:

 Blood and Rage: A Cultural History of Terrorism by Michael Burleigh

Koran, Kalashnikov and Laptop by Antonio Giustiozzi

The Collapse of Complex Societies by Joseph Tainter

Street Without Joy by Bernard Fall

The Third Reich at War by Richard J. Evans

The War Lovers by Evan Thomas

The Death and Life of the Great American School System by Diane Ravitch

Play: How it Shapes the Brain, Opens the Imagination and Energizes the Soul by Stuart Brown

Rewired by Larry D. Rosen

The Human Factor: Inside the CIA’s Dysfunctional Intelligence Culture by “Ishmael Jones“

Coupled with what was leftover from last year, my 2010 summer reading list is set.