EMPLOYMENT PSYCHOLOGY 
I70 
As has been explained in the opening chapter, science con 
sists 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 inaccu 
racies 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 de 
scribed 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.