What's the difference between Normal and True Normal? In the Cycles node editor, for materials, you can get some information about the object, which the material is being applied to, by using a Geometry node.

Among others, you can get the objects Normal and... it's True Normal. This suggests that the first is fake or not as accurate, which makes no sense. This leads me to my question - what is the technical difference between an object's Normal and it's True Normal?
The Blender Wiki states that


  Normal = Shading normal at the surface (includes smooth normals and
  bump mapping).
  
  True Normal = Geometry or flat normal of the surface.


The normal value takes into account your shading technique, while the true normal uses the actual face direction.