I knew a computer science professor who now works, I think, for Google. He was an interesting fellow who defied many CS stereotypes. He read books outside his field, for instance, and spoke in complete sentences. Ten or twelve years ago as I was walking across the engineering quadrangle toward the parking lot, I noticed him kneeling on the sidewalk outside the mechanical engineering building. He seemed to be looking at something in the grass. As I approached, I saw he was studying a fire-ant mound. He said two words: “Brownian motion.”
The phenomenon is named for
a Scottish botanist, Robert Brown, who, in 1827, was the first to describe
the random fluctuations of pollen particles suspended in a fluid. Strictly
speaking, swarming ants are displaying Brownian motion only in a metaphorical
sense, but the prof’s observation has stuck with me and I remember it whenever
I see a swarm of ants or bees. I remembered it also when reading Howard Nemerov’s
“The Crossing” (Gnomes and Occasions, 1973):
“September, and the
butterflies are drifting
Across the sky again, the
monarchs in
Their myriads, delicate
lenses for the light
To fall through and be
mandarin-transformed.
“I guess they are flying
southward, or anyhow
That seems to be the
average of their drift,
Though what you mostly see
is a random light
Meandering, a Brownian
movement to the wind,
“Which is one of Nature's
ways of getting it done,
Whatever it may be, the
rise of hills
And settling of seas, the
fall of leaf
Across the shoulder of the
northern world,
“The snowflakes one by one
that silt the field . . .
All that's preparing now
behind the scene,
As the ecliptic and
equator cross,
Through which the light
butterflies are flying.”
In his 1965 prose work, Journal
of the Fictive Life, Nemerov writes: “Like many poets, I read a good deal
of science, and like most of the poets who do, I do not read it for the sake of
science but rather for the sake of metaphor.” Nemerov took an intelligent
amateur’s interest in science and mathematics. Consider his “Figures of Thought”
(1978):
“To lay the logarithmic
spiral on
Sea shell and leaf alike,
and see it fit,
To watch the same idea
work itself out
In the fighter pilot’s
steepening, tightening turn
Onto his target, setting
up the kill,
And in the flight of
certain wall-eyed bugs
Who cannot see to fly
straight into death
But have to cast their
sidelong glance at it
And come but cranking to
the candle’s flame–
“How secret that is, and
how privileged
One feels to find the same
necessity
Ciphered in forms diverse
and otherwise
Without kinship—that is
the beautiful
In nature as in art, not
obvious,
Not inaccessible, but just
between.
“It may diminish some our
dry delight
To wonder if everything we
are and do
Lies subject to some
little law like that;
Hidden in nature, but not
deeply so.”