Here's the basic order of belief cognitively: It has names but I
don't remember them; you can see it on the
electroencyphalegraphiweroijewrpoawer things. [I'm NOT going to
try spelling - my coffee isn't finished yet].
When faced with novel/unexpected stimulus, It goes like this:
Inhibition/NO (rejection - like how the first bite of an
unexpected food makes you want to spit it up for *just a tiny
moment* - same mechanism but in the brain instead of mouth)
quickly followed by acceptance/YES... then about 400ms later
(might be 200ms - either way it's a long time at this scales -
there's musical notes shorter than these number)... then YOU can
consciously control it all better.
But the initial order is NO -> YES... and the YES has enough
sticking power to make it into the consciousness.
[again, this is for novel stimuli, not expected/assumed stimuli)
You _can_ witness initial no/yes --> rational decision-making
process but it takes a little awareness / introspection. Can't
really CONTROL it at that fast level, but you can watch it
happen and then notice the moment you have control.