Goal: "suspension of belief"
 
  
Two important visual components not 
present in traditional displays.
  
- Peripheral vision
 
 
Our visual system is capable of seeing well outside the frame of  
computer screens, video displays, projected images, etc.
  
- Stereoscopy
 
 
We have two eyes, our visual system uses the slightly different images 
to derive the strong sense of depth we have of the real world.
 
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