FACTS AND FACTORS OF DEVELOPMENT 65 



intelligence and reason are founded upon 

 memory of many past experiences, of many 

 trials and errors and of a few trials and 

 successes. 



There is every evidence that human heings 

 arrive at intelligence and reason by the same 

 process, a process of many trials and errors 

 and a few trials and sviccesses, a remembering 

 of these past experiences and an application 

 of them to new conditions. A baby grasps for 

 things which are out of its reach, until it has 

 learned by experience to appreciate distances; 

 it tests all sorts of pleasant and unpleasant 

 things until it has learned to avoid the latter 

 and seek the former; it experiments with its 

 own body until it has learned what it can do 

 and what it can not do. Is not this learning 

 by experience akin to the same process in the 

 dog and more remotely to the trial and error 

 of the earthworm or the adaptive reflexes of 

 Paramecium? Is not intelligence and reason 

 in all of us, and upon all subjects, based upon 

 the same processes of trial and error, memory 

 of past experiences and application of this to 

 new conditions? Surely this is true in all ex- 



