sartresue wrote:
marshall wrote:
Does anyone know why this is supposed to be joy and not surprise?

I don't get it.

But I AM smiling!

topic
There was no Twisted Evil option, so I chose Joy. The sides of his mouth were up like a smile. But now that I see your response I am surprised I did not choose surprise.

From what I've been reading, there seems to be a kind of generic open-mouthed facial expression. A kind of "Oh what's that?" facial expression. That's the best way I can describe it because facial expressions predate complex language.
This opened mouthed "surprise" expression can be "coloured" with different elements: a slight smile of the opened mouth and raised eyebrows to indicate joyful surprise; wide eyes and a downturned mouth to indicate fearful surprise.
The differences between different kinds of surprise can be very subtle.
I think that's why in some cultures, fear and surprise can look very similar and difficult to tell apart for westerners. I suppose that the subtle development of facial expressions do depend on the socialisation practices within a culture. There are also individual variations in the way emotions are expressed. The way someone expresses his/her emotions individually is character.