At play among the stars

At play among the stars

Budding scientists at play (Public Domain)

Originally published 22 September 1997

Walk­ing home from work, I passed a group a young boys play­ing ball in the street.

You write about sci­ence in the Globe?” queried one of the boys.

That’s right,” I replied.

How about writ­ing about us?” he said. “Play­ing ball.”

What’s that got to do with sci­ence?” I asked.

You’ll think of some­thing,” said the kid.

Well, guys, as a mat­ter of fact, I do think your games have some­thing in com­mon with science.

I’d even go so far as to say that sci­ence is a kind of play.

In Homo Ludens, his book about play in cul­ture, the Dutch his­to­ri­an Johan Huizin­ga writes: “[Play] cre­ates order, is order. Into an imper­fect world and into the con­fu­sion of life it brings a tem­po­rary, a lim­it­ed per­fec­tion… Play casts a spell over us, it is “enchant­i­ng,” “cap­ti­vat­ing.” “It is invest­ed with the noblest qual­i­ties we are capa­ble of per­ceiv­ing in things: rhythm and harmony.”

Like play, sci­ence is a search for order in an imper­fect world. It offers a tem­po­rary, lim­it­ed per­fec­tion in the face of the bloom­ing, buzzing con­fu­sion of every­day real­i­ty. It casts a spell and lifts us out of appar­ent chaos into an ide­al­ized world of make-believe.

The physi­cist Bruce Lind­say wrote: “Sci­ence is a game in which we pre­tend that things are not whol­ly as they seem in order that we may make sense out of them in terms of men­tal process­es pecu­liar to us as human beings.”

The men­tal process­es that lead to sci­ence find their first expres­sion in a par­en­t’s lap. The nurs­ery rhyme is the ear­li­est form of play. The child hears and reacts to the rhythm of the rhyme even before she under­stands the mean­ing of the words. The rhyme is a spe­cial activ­i­ty, marked off in time and space from ordi­nary expe­ri­ence. The slight­est devi­a­tion from the rhyme is set straight by the child who says, “That’s not the way it goes.”

In the enchant­ment of the nurs­ery rhyme we are deal­ing with the same human needs that led all ear­ly cul­tures to impose famil­iar images upon the night’s chaot­ic scat­ter­ing of stars. The images were sim­ple (swans, bears, hunters, etc.) but they pro­vid­ed the plea­sure of recog­ni­tion (“Look! The Big Dip­per.”). Once the con­stel­la­tions had been invent­ed, the arrange­ment of the stars in the night sky was no longer arbi­trary, but nec­es­sary. The con­stel­la­tions cre­at­ed order.

How­ev­er, a few stars, the so-called “wan­der­ing stars” or plan­ets, had the dis­turb­ing habit of mov­ing about. A dif­fer­ent sort of geo­met­ri­cal “rhyme” — cir­cles mov­ing upon cir­cles — proved nec­es­sary to impose order upon the plan­ets, and with these new pat­terns, invent­ed by Greek astronomers, sci­ence was born.

Huizin­ga writes: “In near­ly all the high­er forms of play the ele­ments of rep­e­ti­tion and alter­na­tion [as in the refrain] are like the warp and woof of a fab­ric.” The Greeks made rep­e­ti­tion and alter­na­tion the warp and woof of nature. They called it the prob­lem of One and the Many — explain­ing the way things con­stant­ly change yet some­how remain essen­tial­ly the same.

The laws of Greek astron­o­my, like the rules of any game, allowed a rich vari­ety of vari­a­tion with­in a rigid frame of same­ness. This is some­thing the boys play­ing ball in the street would under­stand. Every play­ing of the game is dif­fer­ent. Every game is played by the rules.

An episode in John Fowles’ nov­el A Sep­a­rate Peace recounts the spon­ta­neous inven­tion of “blitzball” by a dare­dev­il school­boy ath­lete named Finny. Finny picks up a heavy leather-cov­ered ball, a med­i­cine ball, which some­one has left lying about, and says to his pals, “Now this, you see, is every­thing in the world you need for sports. When they dis­cov­ered the cir­cle they cre­at­ed sports.”

Where­upon Finny toss­es the ball and a game begins. Finny makes up the rules as he goes along. The rules seem arbi­trary, but in fact they are intu­itive­ly con­trived by Finny to max­i­mize one par­tic­u­lar out­come — his own abil­i­ty to win. The nar­ra­tor tell us: “Right from the start, it was clear that no one had ever been bet­ter adapt­ed to a sport than Finny was to blitzball.”

The game of blitzball turned out to be wild­ly pop­u­lar at Finny’s school, and was still being played long after Finny and his pals had graduated.

When they invent­ed the cir­cle, they also invent­ed sci­ence. The first the­o­ret­i­cal sci­ence was astron­o­my, and astron­o­my was ground­ed in cir­cles for a thou­sand years. Greek astron­o­my had one goal, “sav­ing the appear­ances”; that is, find­ing some com­bi­na­tion of cir­cu­lar move­ments that exact­ly described the motions of celes­tial bodies.

In ret­ro­spect, the rules of Greek astron­o­my, like the rules of blitzball, seem arbi­trary, but they sur­vived as rules of the astron­o­my game until the time of Kepler and Galileo. In sci­ence, as in all suc­cess­ful games, the rules have a high degree of sta­bil­i­ty. The spoil-sport who refus­es to play by the rules is drummed out of the game. Major changes of the rules, when they occur, usu­al­ly spring from the mind of an inno­v­a­tive genius with an intu­itive “feel for the game” — a Knute Rockne or a Kepler.

Sci­ence is a sophis­ti­cat­ed game of make-believe in which we invent an ide­al­ized world that match­es in many impor­tant respects the world of ordi­nary per­cep­tion. The sci­en­tist is moti­vat­ed by a deep-seat­ed human need for rhythm and har­mo­ny, alter­na­tion and rep­e­ti­tion. In this, the sci­en­tist is a mind at play, cre­ative­ly stretch­ing the lim­its of the pos­si­ble with­in a frame­work of rigid rules — alike in action and spir­it to the boys play­ing ball in the street.

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