Exploring the missing mood in the predictive processing model, which conveniently helps explain everything I believe in.
This bidimensional model is weird.
But I can't imagine pure top left mood. This lead me to think that the mood square is actually a mood triangle, and that there is no top left mood, only a spectrum of moods between anxiety and mania.
I'm with you - I consider myself (and have been called by others) an incredibly optimistic cynic.