Schrödinger's  Cat   by  Ursula  K.  Le  Guin         As  things  appear  to  be  coming  to  some  sort  of  climax,  I  have  withdrawn  to  this  place.   It  is  cooler  here,  and  nothing  moves  fast.   On  the  way  here  I  met  a  married  couple  who  were  coming  apart.  She  had  pretty  well   gone  to  pieces,  but  he  seemed,  at  first  glance,  quite  hearty.  While  he  was  telling  me  that  he   had  no  hormones  of  any  kind,  she  pulled  herself  together  and,  by  supporting  her  head  in   the  crook  of  her  right  knee  and  hopping  on  the  toes  of  her  right  foot,  approached  us   shouting,  "Well  what's  wrong  with  a  person  trying  to  express  themselves?"  The  left  leg,  the   arms,  and  the  trunk,  which  had  remained  lying  in  the  heap,  twitched  and  jerked  in   sympathy.  "Great  legs,"  the  husband  pointed  out,  looking  at  the  slim  ankle.  "My  wife  had   great  legs."     A  cat  has  arrived  interrupting  my  narrative.  It  is  a  striped  yellow  tom  with  white   chest  and  paws.  He  has  long  whiskers  and  yellow  eyes.  I  never  noticed  before  that  cats  had   whiskers  above  their  eyes;  is  that  normal?  There  is  no  way  to  tell.  As  he  has  gone  to  sleep   on  my  knee,  I  shall  proceed.     Where?       Nowhere,  evidently.  Yet  the  impulse  to  narrate  remains.  Many  things  are  not  worth   doing,  but  almost  anything  is  worth  telling.  In  any  case,  I  have  a  severe  congenital  case  of   Ethica  laboris  puritanica,1  or  Adam's  Disease.  It  is  incurable  except  by  total  decapitation.  I   even  like  to  dream  when  asleep,  and  to  try  and  recall  my  dreams:  it  assures  me  that  I   haven't  wasted  seven  or  eight  hours  just  lying  there.  Now  here  I  am,  lying,  here.  Hard  at  it.   Well,  the  couple  I  was  telling  you  about  finally  broke  up.  The  pieces  of  him  trotted   around  bouncing  and  cheeping,  like  little  chicks,  but  she  was  finally  reduced  to  nothing  but   a  mass  of  nerves:  rather  like  fine  chicken  wire,  in  fact,  but  hopelessly  tangled.   So  I  came  on,  placing  one  foot  carefully  in  front  of  the  other,  and  grieving.  This  grief   is  with  me  still.  I  fear  it  is  part  of  me,  like  foot  or  loin  or  eye,  or  may  even  be  myself:  for  I   seem  to  have  no  other  self,  nothing  further,  nothing  that  lies  outside  the  borders  of  grief.   Yet  I  don't  know  what  I  grieve  for:  my  wife?  my  husband?  my  children,  or  myself?  I   can't  remember.  Most  dreams  are  forgotten,  try  as  one  will  to  remember.  Yet  later  music   strikes  the  note,  and  the  harmonic  rings  along  the  mandolin  strings  of  the  mind,  and  we   find  tears  in  our  eyes.  Some  note  keeps  playing  that  makes  me  want  to  cry;  but  what  for?  I   am  not  certain.   The  yellow  cat,  who  may  have  belonged  to  the  couple  that  broke  up,  is  dreaming.  His   paws  twitch  now  and  then,  and  once  he  makes  a  small,  suppressed  remark  with  his  mouth   shut.  I  wonder  what  cats  dream  of,  and  to  whom  he  was  speaking  just  then.  Cats  seldom   waste  words.  They  are  quiet  beasts.  They  keep  their  counsel,  they  reflect.  They  reflect  all   day,  and  at  night  their  eyes  reflect.  Overbred  Siamese  cats  may  be  as  noisy  as  little  dogs,   and  then  people  say,  "They're  talking,"  but  the  noise  is  farther  from  speech  than  is  the  deep   silence  of  the  hound  or  tabby.  All  this  cat  can  say  is  meow,  but  maybe  in  his  silences  he  will   suggest  to  me  what  it  is  that  I  have  lost,  what  I  am  grieving  for.  I  have  a  feeling  that  he   knows.  That's  why  he  came  here.  Cats  look  out  for  Number  One.   It  was  getting  awfully  hot.  I  mean,  you  could  touch  less  and  less.  The  stove  burners,   for  instance.  Now  I  know  that  stove  burners  always  used  to  get  hot;  that  was  their  final   cause,  they  existed  in  order  to  get  hot.  But  they  began  to  get  hot  without  having  been   turned  on.  Electric  units  or  gas  rings,  there  they'd  be  when  you  came  into  the  kitchen  for   breakfast,  all  four  of  them  glaring  away,  the  air  above  them  shaking  like  clear  jelly  with  the   heat  waves.  It  did  no  good  to  turn  them  off,  because  they  weren't  on  in  the  first  place.   Besides,  the  knobs  and  dials  were  also  hot,  uncomfortable  to  the  touch.   Some  people  tried  to  cool  them  off.  The  favorite  technique  was  to  turn  them  on.  It   worked  sometimes,  but  you  could  not  count  on  it.  Others  investigated  the  phenomenon,   tried  to  get  at  the  root  of  it,  the  cause.  They  were  probably  the  most  frightened  ones,  but   man  is  most  human  at  his  most  frightened.  In  the  face  of  the  hot  stove  burners  they  acted   with  exemplary  coolness.  They  studied.  They  observed.  They  were  like  the  fellow  in   Michelangelo's  Last  Judgment,  who  has  clapped  his  hands  over  his  face  in  horror  as  the   devils  drag  him  down  to  Hell—but  only  over  one  eye.  The  other  eye  is  busy  looking.  It's  all   he  can  do,  but  he  does  it.  He  observes.  Indeed,  one  wonders  if  Hell  would  exist,  if  he  did  not   look  at  it.  However,  neither  he,  nor  the  people  I  am  talking  about,  had  enough  time  left  to   do  much  about  it.  And  then  finally  of  course  there  were  the  people  who  did  not  try  to  do  or   think  anything  about  it  at  all.   When  the  water  came  out  of  the  cold-­‐water  taps  hot  one  morning,  however,  even   people  who  had  blamed  it  all  on  the  Democrats  began  to  feel  a  more  profound  unease.   Before  long,  forks  and  pencils  and  wrenches  were  too  hot  to  handle  without  gloves;  and   cars  were  really  terrible.  It  was  like  opening  the  door  of  an  oven  going  full  blast,  to  open  the   door  of  your  car.  And  by  then,  other  people  almost  scorched  your  fingers  off.  A  kiss  was  like   a  branding  iron.  Your  child's  hair  flowed  along  your  hand  like  fire.   Here,  as  I  said,  it  is  cooler;  and,  as  a  matter  of  fact,  this  animal  is  cool.  A  real  cool  cat.   No  wonder  it's  pleasant  to  pet  his  fur.  Also  he  moves  slowly,  at  least  for  the  most  part,   which  is  all  the  slowness  one  can  reasonably  expect  of  a  cat.  He  hasn't  that  frenetic  quality   most  creatures  acquired—all  they  did  was  ZAP  and  gone.  They  lacked  presence.  I  suppose   birds  always  tended  to  be  that  way,  but  even  the  hummingbird  used  to  halt  for  a  second  in   the  very  center  of  his  metabolic  frenzy,  and  hang,  still  as  a  hub,  present,  above  the   fuchsias—then  gone  again,  but  you  knew  something  was  there  besides  the  blurring   brightness.  But  it  got  so  that  even  robins  and  pigeons,  the  heavy  impudent  birds,  were  a   blur;  and  as  for  swallows,  they  cracked  the  sound  barrier.  You  knew  swallows  only  by  the   small,  curved  sonic  booms  that  looped  about  the  eaves  of  old  houses  in  the  evening.   Worms  shot  like  subway  trains  through  the  dirt  of  gardens,  among  the  writhing   roots  of  roses.   You  could  scarcely  lay  a  hand  on  children,  by  then:  too  fast  to  catch,  too  hot  to  hold.   They  grew  up  before  your  eyes.   But  then,  maybe  that's  always  been  true.   I  was  interrupted  by  the  cat,  who  woke  and  said  meow  once,  then  jumped  down   from  my  lap  and  leaned  against  my  legs  diligently.  This  is  a  cat  who  knows  how  to  get  fed.   He  also  knows  how  to  jump.  There  was  a  lazy  fluidity  to  his  leap,  as  if  gravity  affected  him   less  than  it  does  other  creatures.  As  a  matter  of  fact  there  were  some  localised  cases,  just   before  I  left,  of  the  failure  of  gravity;  but  this  quality  in  the  cat's  leap  was  something  quite   else.  I  am  not  yet  in  such  a  state  of  confusion  that  I  can  be  alarmed  by  grace.  Indeed,  I  found   it  reassuring.  While  I  was  opening  a  can  of  sardines,  a  person  arrived.   Hearing  the  knock,  I  thought  it  might  be  the  mailman.  I  miss  mail  very  much,  so  I   hurried  to  the  door  and  said,  "Is  it  the  mail?"   A  voice  replied,  "Yah!"  I  opened  the  door.  He  came  in,  almost  pushing  me  aside  in  his   haste.  He  dumped  down  to  enormous  knapsacks  he  had  been  carrying,  straightened  up,   massaged  his  shoulders,  and  said,  "Wow!"   "How  did  you  get  here?"   He  stared  at  me  and  repeated,  "How?"   At  this  my  thoughts  concerning  human  and  animal  speech  recurred  to  me,  and  I   decided  that  this  was  probably  not  a  man,  but  a  small  dog.  (Large  dogs  seldom  go  yah,  wow,   how,  unless  it  is  appropriate  to  do  so.)   "Come  on,  fella,"  I  coaxed  him.  "Come,  come  on,  that's  a  boy,  good  doggie!"  I  opened   a  can  of  pork  and  beans  for  him  at  once,  for  he  looked  half  starved.  He  ate  voraciously,   gulping  and  lapping.  When  it  was  gone  he  said  "Wow!"  several  times.  I  was  just  about  to   scratch  him  behind  the  ears  when  he  stiffened,  his  hackles  bristling,  and  growled  deep  in   his  throat.  He  had  noticed  the  cat.   The  cat  had  noticed  him  some  time  before,  without  interest,  and  was  now  sitting  on   a  copy  of  The  Well-­‐Tempered  Clavier  washing  sardine  oil  off  its  whiskers.   "Wow!"  the  dog  whom  I  had  thought  of  calling  Rover,  barked.  "Wow!  Do  you  know   what  that  is?  That's  Schrödinger's  cat!"   "No  it's  not,  not  any  more;  it's  my  cat,"  I  said,  unreasonably  offended.   "Oh,  well,  Schrödinger's  dead,  of  course,  but  it's  his  cat.  I've  seen  hundreds  of   pictures  of  it.  Erwin  Schrödinger,  the  great  physicist,  you  know.  Oh,  wow!  To  think  of   finding  it  here!"   The  cat  looked  coldly  at  him  for  a  moment,  and  began  to  wash  its  left  shoulder  with   negligent  energy.  An  almost  religious  expression  had  come  into  Rover's  face.  "It  was   meant,"  he  said  in  a  low,  impressive  tone.  "Yah.  It  was  meant.  It  can't  be  a  mere  coincidence.   It's  too  improbable.  Me,  with  the  box;  you,  with  the  cat;  to  meet—here—now."  He  looked   up  at  me,  his  eyes  shining  with  happy  fervor.  "Isn't  it  wonderful?"  he  said.  "I'll  get  the  box   set  up  right  away."  And  he  started  to  tear  open  his  huge  knapsack.   While  the  cat  washed  its  front  paws,  Rover  unpacked.  While  the  cat  washed  its  tail   and  belly,  regions  hard  to  reach  gracefully,  Rover  put  together  what  he  had  unpacked,  a   complex  task.  When  he  and  the  cat  finished  their  operations  simultaneously  and  looked  at   me,  I  was  impressed.  They  had  come  out  even,  to  the  very  second.  Indeed  it  seemed  that   something  more  than  chance  was  involved.  I  hoped  it  was  not  myself.   "What's  that?"  I  asked,  pointing  to  a  protuberance  on  the  outside  of  the  box.  I  did  not   ask  what  the  box  was  as  it  was  quite  clearly  a  box.   The  gun,"  Rover  said  with  excited  pride.   "The  gun?"   "To  shoot  the  cat."   "To  shoot  the  cat?"   "Or  to  not  shoot  the  cat.  Depending  on  the  photon."   "The  photon?"   "Yah!  It's  Schrödinger's  great  Gedankenexperiment.  You  see,  there's  a  little  emitter   here.  At  Zero  Time,  five  seconds  after  the  lid  of  the  box  is  closed,  it  will  emit  one  photon.   The  photon  will  strike  a  half-­‐silvered  mirror.  The  quantum  mechanical  probability  of  the   photon  passing  through  the  mirror  is  exactly  one  half,  isn't  it?  So!  If  the  photon  passes   through,  the  trigger  will  be  activated  and  the  gun  will  fire.  If  the  photon  is  deflected,  the   trigger  will  not  be  activated  and  the  gun  will  not  fire.  Now,  you  put  the  cat  in.  The  cat  is  in   the  box.  You  close  the  lid.  You  go  away!  You  stay  away!  What  happens?"  Rover's  eyes  were   bright.   "The  cat  gets  hungry?"   "The  cat  gets  shot—or  not  shot,"  he  said  seizing  my  arm,  though  not,  fortunately,  in   his  teeth.  "But  the  gun  is  silent,  perfectly  silent.  The  box  is  soundproof.  There  is  no  way  to   know  whether  or  not  the  cat  has  been  shot  until  you  lift  the  lid  of  the  box.  There  is  no  way!   Do  you  see  how  central  this  is  to  the  whole  of  quantum  theory?  Before  Zero  Time  the  whole   system,  on  the  quantum  level  or  on  our  own  level,  is  nice  and  simple.  But  after  Zero  Time   the  whole  system  can  be  represented  only  by  a  linear  combination  of  two  waves.  We   cannot  predict  the  behavior  of  the  photon,  and  thus,  once  it  has  behaved,  we  cannot  predict   the  state  of  the  system  it  has  determined.  We  cannot  predict  it!  God  plays  dice  with  the   world!  So  it  is  beautifully  demonstrated  that  if  you  desire  certainty,  any  certainty,  you  must   create  it  yourself!"   "How?"   "By  lifting  the  lid  of  the  box,  of  course,"  Rover  said,  looking  at  me  with  sudden   disappointment,  perhaps  a  touch  of  suspicion,  like  a  Baptist  who  finds  he  has  been  talking   church  matters  not  to  another  Baptist  as  he  thought,  but  a  Methodist,  or  even,  God  forbid,   an  Episcopalian.  "To  find  out  whether  the  cat  is  dead  or  not."   "Do  you  mean,"  I  said  carefully,  "that  until  you  lift  the  lid  of  the  box,  the  cat  has   neither  been  shot  nor  not  been  shot?"   "Yah!"  Rover  said,  radiant  with  relief,  welcoming  back  to  the  fold.  "Or  maybe,  you   know,  both."   "But  why  does  opening  the  box  and  looking  reduce  the  system  back  to  one   probability,  either  live  cat  or  dead  cat?  Why  don't  we  get  included  in  the  system  when  we   lift  the  lid  of  the  box?"   There  was  a  pause.  "How?"  Rover  barked,  distrustfully.   "Well,  we  would  involve  ourselves  in  the  system,  you  see,  the  superposition  of  the   two  waves.  There's  no  reason  why  it  should  only  exist  inside  an  open  box,  is  there?  So   when  we  came  to  look,  there  we  would  be,  you  and  I,  both  looking  at  a  live  cat,  and  both   looking  at  a  dead  cat.  You  see?"   A  dark  cloud  lowered  on  Rover's  eyes  and  brow.  He  barked  twice  in  a  subdued,   harsh  voice,  and  walked  away.  With  his  back  turned  to  me  he  said  in  a  firm,  sad  tone,  "You   must  not  complicate  the  issue.  It  is  complicated  enough."   "Are  you  sure?"   He  nodded.  Turning,  he  spoke  pleadingly.  "Listen.  It's  all  we  have—the  box.  Truly  it   is.  The  box.  And  the  cat.  And  they're  here.  The  box,  the  cat,  at  last.  Put  the  cat  in  the  box.   Will  you?  Will  you  let  me  put  the  cat  in  the  box.   "No,"  I  said,  shocked.   "Please.  Please.  Just  for  a  minute.  Just  for  half  a  minute!  Please  let  me  put  the  cat  in   the  box!"   "Why?"   "I  can't  stand  this  terrible  uncertainty,"  he  said,  and  burst  into  tears.   I  stood  with  some  indecision.  Though  I  felt  sorry  for  the  poor  son  of  a  bitch,  I  was   about  to  tell  him,  gently,  No;  when  a  curious  thing  happened.  The  cat  walked  over  to  the   box,  sniffed  around  it,  lifted  his  tail  and  sprayed  a  corner  to  mark  his  territory,  and  then   lightly,  with  that  marvelous  fluid  ease,  leapt  into  it.  His  yellow  tail  just  flicked  the  edge  of   the  lid  as  he  jumped,  and  it  closed,  falling  into  place  with  a  soft,  decisive  click.   "The  cat  is  in  the  box,"  I  said.   "The  cat  is  in  the  box,"  Rover  repeated  in  a  whisper,  falling  to  his  knees.  "Oh,  wow.   Oh,  wow.  Oh,  wow."   There  was  silence  then:  deep  silence.  We  both  gazed,  I  afoot,  Rover  kneeling,  at  the   box.  No  sound.  Nothing  happened.  Nothing  would  happen.  Nothing  would  ever  happen,   until  we  lifted  the  lid  of  the  box.   "Like  Pandora,"  I  said  in  a  weak  whisper.  I  could  not  quite  recall  Pandora's  legend.   She  had  let  all  the  plagues  and  evils  out  of  the  box,  of  course,  but  there  had  been  something   else,  too.  After  all  the  devils  were  let  loose,  something  quite  different,  quite  unexpected,  had   been  left.  What  had  it  been?  Hope?  A  dead  cat?  I  could  not  remember.   Impatience  welled  up  in  me.  I  turned  on  Rover,  glaring.  He  returned  the  look  with   expressive  brown  eyes.  You  can't  tell  me  dogs  haven't  got  souls.   "Just  exactly  what  are  you  trying  to  prove?"  I  demanded.   "That  the  cat  will  be  dead,  or  not  dead,"  he  murmured  submissively.  "Certainty.  All  I   want  is  certainty.  To  know  for  sure  that  God  does  play  dice  with  the  world."   I  looked  at  him  for  a  while  with  fascinated  incredulity.  "Whether  he  does,  or   doesn't,"  I  said,  "do  you  think  he's  going  to  leave  you  a  note  in  the  box?"  I  went  to  the  box,   and  with  a  rather  dramatic  gesture,  flung  the  lid  back.  Rover  staggered  up  from  his  knees,   gasping,  to  look.  The  cat  was,  of  course,  not  there.   Rover  neither  barked,  nor  fainted,  nor  cursed,  nor  wept.  He  really  took  it  very  well.   "Where  is  the  cat?"  he  asked  at  last.   "Where  is  the  box?"   "Here."   "Where's  here?"   "Here  is  now."   "We  used  to  think  so,"  I  said,  "but  really  we  should  use  larger  boxes."   He  gazed  about  in  mute  bewilderment,  and  did  not  flinch  even  when  the  roof  of  the   house  was  lifted  off  just  like  the  lid  of  the  box,  letting  in  the  unconscionable,  inordinate   light  of  the  stars.  He  had  just  time  to  breathe,  "Oh,  wow!"   I  have  identified  the  note  that  keeps  sounding.  I  checked  it  on  the  mandolin  before   the  glue  melted.  It  is  the  note  A,  the  one  that  drove  the  composer  Schumann  mad.  It  is  a   beautiful,  clear  tone,  much  clearer  now  that  the  stars  are  visible.  I  shall  miss  the  cat.  I   wonder  if  he  found  what  it  was  we  lost?