EMPLOYMENT  PSYCHOLOGY

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As  has  been  explained  in  the  opening  chapter,  science  consists ­
  of  the  application  of  an  exact  and  refined  method  to
the  study  of  the  facts,  in  order  to  produce  knowledge  which
shall  be:  first,  knowledge  which  is  free  from  the  inaccuracies ­
  and  prejudices  of  the  unguided  human  faculties;  and
secondly,  knowledge  which  is  standard;  that  is,  knowledge
which  can  be  transmitted  in  unambiguous  and  indisputable
terms  from  one  person  or  time  to  another.  Psychology  is
the  science  which  attempts  to  apply  this  method  to  the
facts  of  human  nature.  To  be  sure,  there  are  loopholes
in  the  technique  which  has  been  described  and  illustrated
in  the  preceding  chapters.  This,  however,  can  be  said  of
any  science.  There  is  no  science,  not  even  the  most
exact,  from  which  the  errors  due  to  the  human  equation
can  be  entirely  eliminated.  However,  the  technique  described ­
  in  this  and  in  other  books  on  psychology  are  ample
proof  of  the  care  with  which  the  scientific  method  is  being
applied  where  only  home  remedies  were  used  before.