[ti:17]
[ar:asd]
[00:17.356]Imagine  that  you  spent  your  whole  life  at  a  single  house.
[00:20.794]Each  day  at  the  same  hour  you  entered  an  artificially-lit  room,
[00:25.607]undressed  and  took  up  the  same  position  in  front  of  a  motion  picture  camera.
[00:31.419]It  photographed  one  frame  of  you  per  day,every  day  of  your  life.
[00:36.919]On  your  seventy-second  birthday,the  reel  of  film  was  shown.You  saw  yourself  growing  and  aging  over  seventy-two  years  in  less  than  half  an  hour（27.4minites  at  sixteen  frames  per  second）.
[00:50.857]Images  of  this  sort ,though  terrifying,are  helpful  in  suggesting  unfamiliar  but  useful  perspectives  of  time.They  may ,
[01:04.171]for  example ,symbolize  the  telescoped ,
[01:07.297]almost  momentary  charater  of  the  past  as  seen  through  the  eyes  of  an  anxious  or  disa-ffected  individual.
[01:14.108]Or  they  may  suggest  the  remarkable  brevity  of  our  lifes  in  the  cosmic  scale  of  time.
[01:21.859]If  the  estimated  age  of  the  cosmos  were  shorted  to  seventy-two  years,
[01:29.297]a  human  life  would  take  about  ten  seconds.
[01:31.359]But  look  at  time  the  other  way.
[01:34.110]Each  day  is  a  minor  eternity  of  over 86000seconds.
[01:40.734]During  each  second,the  number  of  distinct  molecular  functions  going  on  with  the  human  body  is  comparable  to  the  mumber  of  seconds  in  the  estimated  age  of  the  cosmos,
[01:53.610]A  few  seconds  are  long  enough  for  a  revolutionary  idea,
[01:57.798]a  startling  communication,a  baby's  conception,a  wounding  insult,a  sudden  death.
[02:05.298]Depending  on  how  we  think  of  them,our  lives  can  be  infinitely  long  or  infinitely  short.