PHYSIOLOGICAL PARADOXES. 



are nearer to him when on the right hand 

 side or on the left, he has no means of know- 

 ing. The actual facts seen by him in A would 

 correspond equally well both to the arrange- 

 ment shown at B and to that shown at C. 



But the mind, in drawing its conclusions, 

 does not limit itself to the information sup- 

 plied on each occasion by the senses. It 

 relies also on the help of unconscious reason- 

 ing and on the instinctive judgment which 

 has grown out of past experience. 



FlQ. 50. LIMITATIONS OF SIGHT: MENTAL INTERPRETATIONS. 



It may be, for instance, that there is some 

 general practice in building the sails of wind- 

 mills, to construct them all to turn in the 

 same direction. The rule may be to con- 

 struct them so that a spectator with his back 

 to the wind would always see them going 

 round clockwise. In that case, a miller from 

 a distance, seeing the view suggested in A, 

 and feeling the wind to be somewhere from his 

 left towards his right, would be sure that he 

 was looking towards the front of the sails, and 



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