Reason And Doubt In my view, doubt is just the scale that represents the difference between belief and truth.
Is doubt innate for humans or did it evolve? To answer the question properly I try to imagine if I was an early human who was without rationality and no a priori Knowledge to draw from.
I'm in existence, but I know nothing about it, One of my senses will create my first thought, most common was hunger, I suspect. Either way, I would act without doubt until the point when what I had experienced to happen before did not happen.
Not yet being able to reason, the memory of the interaction will still be stored in my memory. Before there was a concept of belief and truth, truth was everything I experienced. This is when doubt truly evolved. Before we could rationalize the difference, belief became the concept of "what it is", and truth became the concept of "was supposed to be".
Anyway, my point is, doubt was not innate, it was learned from experience. If you consider the brain/mind duality, the brain is the source of the mind, but the mind has an effect on the brain. The brain uses electrical and biological methods that allow it to create a storage space for experience input.
In the beginning, the mind was just a collection of experienced memories. But each memory changed the structure of the brain as it developed. Through time we evolved a consciousness. If you don't narrow the discussion to Darwinian evolution, then you must accept the fact of evolution as a concept being required because of time.
We will always be subject to the effects of time. Any differences between T1 and T2 can be considered evolutionary since T2 is inherited from T1. Any Social state, from S1 to S2 is evolutionary because S2 inherited the conditions of S1 in order to be able to become S2.
In both cases, time just causes changes everywhere, but it always moves forward, so what ever universe you choose to imagine, was inherited from a previous universe and was therefore evolutionary. The only thing innate in a species is what it has at the start. All else is inherited from there over time.
I hope this informs the conversation in some way, as far as it concerns doubt as innate vs evolutionary.
Ultimately, it's just my view of the situation, conjured from my imagination.