Wednesday, January 4, 2012

Sunday, January 1, 2012

Lucretius' Prescience


Nearly 2100 years ago—a generation or two before Jesus was born—a Roman poet created an astounding work of art and science. Although it was regarded at the time as an achingly beautiful poem, it was also a prescient description of the workings of this universe—literally a scientific treatise that would require nearly 2000 years to prove its veracity. The Roman author of the work was Titus Lucretius, and he titled it De rerum natura in Latin, which translates to On the Nature of Things. It’s an extensive work, running some 7400 lines of verse, grouped into six books.

Lucretius based his insights on earlier Greek schools of thought, some of which taught that everything in the universe is made of invisible building blocks, which they called atoms, from the Greek word atomos, which means “indivisible.” The notion of the existence of atoms had originated over 400 years before Lucretius came along. It began with ancient Greeks such as Leucippus, Democritus, and Epicurus. These atomistic ideas competed with several other theories of matter, but eventually faded; losing out to the Greek schools headed by more wealthy and aristocratic scholars—particularly Aristotle. In addition, the concepts promulgated by Aristotle and his cohorts fit more comfortably with religious teachings of the time, and then were embraced by the Christian Church, after it came to power.

Lucretius expanded upon the teachings of the early Greek atomists and incorporated several other ideas, laying out an astoundingly accurate description of the physical world, long before humans had the scientific instruments to prove the truth of his writings.

Science has historically developed its understanding of how the universe behaves in two contrasting ways: via intuition and by experimentation (as well as by some combination of the two). Those who made intuitive discoveries usually puzzled over some natural phenomenon for a lengthy period, before an insight suddenly came to them. Einstein brooded about relativity for years—nearly losing his mundane job because of his daydreaming—and then the elegant answers suddenly came to him, almost like in a dream. Isaac Newton had escaped London’s black plague and for months sat scribbling safely at his country desk, before realizations came to him of the nature of forces and their effects on bodies.

Both of these men’s insights were expressed through elegant descriptions and mathematics. It was many years before other scientists could conduct the necessary experiments that could verify their theories—either because the necessary instruments had not yet been invented or no one had even conceived of such experiments.

The second principle way of scientific exploration is by experimentation. With instruments in hand, an experiment is conducted, that explores some aspect of the natural world, and often leads to some new understanding of how nature works.

What is astounding about Lucretius’ On the Nature of Things is that he was two millennia ahead of his time—rather than just a couple of decades, as in Einstein’s case. It fascinates me that, strictly through mental effort, Lucretius and his cohorts could have had such profound insight, so far ahead of their time. How could they have anticipated that everything in the universe is composed of endless combinations of tiny building blocks that were far beyond their ability to see or touch? Not only that, but Lucretius also anticipated evolution (1800 years before Darwin!) and expounded a philosophy that touched on spiritual matters. His thoughts in these areas are amazingly modern in tone.

A just-published book by Stephan Greenblatt (The Swerve) describes how Lucretius’ book barely escaped being lost to history; it was remarkably discovered in a German monastery some 1500 years after he had penned it. His insights had lain dormant until the 15th century, and, when rediscovered, played a major role in fueling the scientific achievements of the Renaissance, and giving modern science its kick-start.

Why had Lucretius’ prescient ideas not become the foundation of scientific understanding during his time? Primarily because they clashed with the philosophical and religious beliefs that came to prominence in the centuries after the early flourishing Greek culture. For centuries—up to and throughout the so-called dark ages—the Western world based its views of the natural world on dogma that stifled scientific discovery.

More on Lucretius’ insights next time…

Sunday, December 25, 2011

Wednesday, December 21, 2011

Reincarnating the Pond--Part 2


It dawned on me that my actions had now made me the main person responsible for the caretaking of the pond. I had brought about the refill and the critters seemed to enjoy it, but what had I started? Pretty soon the pond began to look a little scummy from algae growth. Weren’t there fish in it before it drained? Don’t fish maybe eat algae and keep the water clear?

After heavy rains, the pond water—now no longer having access to a drainpipe—would threaten to crest the dam. Oh-oh, was this leading to the possible failure of the dam embankment, allowing a tsunami to sweep down the holler towards our house? Had I opened Pandora’s Pond?

Luckily, I have a buddy who previously worked for Uncle Sam’s soil conservation service, who once made a living by advising farmers how to build a dam to store water and control flooding. I asked Roger to come by and give me his professional advice on whether or not I’d dived in over my head. After the obligatory period of pulling my chain a couple of times, he got serious and told me, “That’s a damn strong dam… not to worry.” That advice helped enormously!

I also consulted him on the spreading algae scum. His advice was to get some koi, release them into the pond, and they’d be happy to keep it clean. He had a similar pond next to his house that he’d stocked with koi, and he enjoyed watching them swim in the clear water. Koi is the Japanese word for carp—a large ornamental fish that is bright orange, with white and black splotches. I called the local pet store; to find out that koi were quite pricey. I hesitated at running an experiment of tossing $30 worth of fancy foreign fish into the pond, only to watch them die off.

Then it occurred to me that goldfish are also a type of carp—and they cost only 25 cents apiece, rather than $3-4. I bought a dozen one-inch long goldfish and released them into what I fervently hoped would become their happy home. The next season, pausing by the pond one day, I peered into the water and cheered when I spotted a small school of goldfish—now a couple of inches long! Over the next year or so the algae disappeared and I watched the goldfish grow into sizeable carp—some approaching a foot long!

Victory is often short lived, it seems. Over the last couple of years, I have seen no goldfish. Many a time I’ve stood at pondside, gazing hopefully into the depths, but have seen no slinky golden forms. Were they still down there, but playing koi (err… coy)? Did something eat them? They had no way of knowing that their flashy gold color stood starkly out and that hawks might decide to dine on them. Would the pond now algae over again? What had I gotten myself into?

It seems that I have become involved with yet another ongoing experiment with Mother Nature. I have interfered and started something. Every move we make, we enter into some kind of dance with the natural world, in which we disturb the balance of the environment, and cause ripples that flow outward. We have minimal understanding of the complexity and entanglement of nature’s worldwide web. If we try to make our actions benign and do them with care, our disturbances may be harmless, or even helpful. If our actions are harsh and careless, we can do lasting damage. It behooves us to step cautiously… we’re meddling with the sacred.




Thursday, December 15, 2011

Monday, December 12, 2011

Reincarnating the Pond--Part 1


 
Surrounding our lovely 30 acres of forested land is some 500 acres, possessed either by absentee owners or by aging folks who stay at home. It’s a blessing, because, not only do we have no close neighbors, but also we have all that land we can wander through. On an adjacent 40-acre parcel is a lovely little pond that was created by the owners building a dam across a holler, years before we settled here.

One of my regular paths through the woods wanders by that pond—where I love to pause and observe the wildlife that draws sustenance from the water: amphibians, birds, deer, raccoons, insects, and myriad other critters I’ve yet to spot. The pond is a beautiful mini ecosystem that provides important habitat for all these creatures. In the winter, I can ice skate on its frozen surface and in warmer times, I enjoy tossing sticks in the water for the dogs to chase.

We also very much appreciate the dam holding back runoff from the holler. We are downstream from it all and the pond stores a lot of water in the wake of summer downpours, rather than let it roar threateningly by us.

Some 15 years ago, the overflow drainpipe for the pond rusted and broke off. This pipe was originally installed to allow extra water to drain from the pond, rather than let it build up to a level that might top the dam. With the pipe broken, the pond quickly drained dry—stealing its nourishing waters from all the wildlife. For the next few years, I continued to visit the (now dry) pond, lamenting its loss. The owner lives somewhere out near the West Coast and rarely visits his little Shenandoah Valley acreage. I have no way to contact him and I guessed that he was not only unaware of the empty pond, but most likely would be reluctant to pay for its repair, if he did know.

After a couple of years of hiking past the pondless pond and longing for the good old days when it teemed with life, I secretly laid plans to raise the pond, phoenix like, from the dry dust of the empty hole it had become. The broken drainpipe that lay beneath the dam had to be stoppered. It seemed to me that if I plugged the upper end of that pipe, maybe the pond would rise again!

Laboriously, I carried several buckets of cement and water overland, mixed them with some rocks from the dry pond bottom, and corked the end of the pipe. I committed my clandestine act in broad daylight, glancing guiltily over my shoulder more than once. Did I have any right to take this action?

Skulking back home, I turned the project over to Mother Nature. Sure enough, over the next year or so, the pond slowly refilled and then I delighted when once again I heard frogs and saw newts swimming along. The dragonflies returned and I occasionally saw deer hoof prints at pondside. It felt great to see all the wildlife return, even though my conscience occasionally gnawed at me. How would the owner respond to my reincarnation work? Would he even know (especially if I kept my dirty little secret)?

Continued next time…