> I think you are right...area lights only affect shadows, the shading is
> the same as for point lights.

is this true?  i thought area lights were made of several point lights. 
if what you are saying is true, than if my area light is bigger than my
object (a sphere for example) the light side is only one hemisphere
instead of more than a hemisphere?  that seems wrong to me.  take the
following sketches for further example:

0----0----0----0<---area light           0 <--point light
        0<-sphere                        0<-sphere

in example one it seems to me that light from the outer edges of the
area light should get farther underneath the point light than in example
two.  example two should light less than one hemisphere and example one
should light way more than a hemisphere.  in my opinion, if this isn't
how it works, it's wrong and should be fixed.

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