I agree wholeheartedly. I am not a scientist, or even a science student. 
(I guess I'm a science groupie). I am an actor and I'm on this board 
because I am a real-world friend of Dave McFadzean. Mixed states of 
belief do exist simultaneously in humans and, apparently, we are the 
only creatures who do this. It is observable in our ability to mimic, or 
participate in mimesis, (No, I don't mean memesis) I mean our ability to 
concieve of the Other (Alterity) and mimic it (Mimesis). This happens 
every time an actor steps on stage. When I perform, my consciousness is 
operating on two levels. One: I am Steve doing my job. Two: I am Hamlet 
or Bobo the clown or whatever and, if I am doing my job well, I am 
thinking, behaving AS the prince or the clown. Many people are under the 
misconception that actors are just excellent liars. That we always know 
we are "acting". I think this is a defensive statement because most 
people are treatened by the idea of several levels of truth. Conversely, 
people who believe in several layers of truth tend to stay quiet about 
it because the "single truth" people (naive as they may be) are always 
jumping all over the place pointing out "inconsistencies" and looking 
for "hypocrisy". These two groups are known in my circle as "critics" 
(for proper pronounciation, say it with a sneer) and "artists". More 
general terminology would label them as "Fundamentalists" and 
"Philosphers". See Michael Taussig's "Mimesis and Alterity" for more 
info on this.