> Correct.  It is interesting how our perception of our world often differs
> from reality.  When I started working on the photon code, I started looking
> more closely at real items in the real world, and I noticed that many
> shadows of clear objects (such as a glass of water) looked very different
> than how I thought they "should" look.  The reality is that much of the
> shadow area is almost completely black.  However, when we casually view
> something like a glass of water, if we don't look carefully, our brains have
> a tendency to fill in details that really aren't there.

Ah yes - the mind does not always perceive what is before the eye... 
(See any optical illusion for a simple proof of this concept.)

Personally, I would suggest that maybe the lightsource is in the wrong 
place (and/or should be an area light - do photons respond to those?)

Andrew.

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