I've read Kahneman, and I understand the ubiquitous nature of biases. That said, a fella could use Kahneman to undermine ANY conversation.
I didn't mean biases as in the 'heuristics and biases' branch of psychology, but biased as in based on attitude to interpretation of language, preconceived notions about how the text 'should' be read, subjective experience and personal preference.
Simply calling for a 'parsimonious' reading is a bias (as would be calling for a figurative, historically contextual or esoteric reading)
As far as "how to read the scripture", I don't buy your argument. It sounds to me like your argument means that only scholars and historians can "properly" interpret the scripture, and of course that's a huge problem for the 1.6 billion Muslims who aren't historians.
I didn't say you couldn't interpret it, I just said interpretation can never be unbiased by anyone, layman or scholar alike.
Your approach to scripture is closest to Salafism. There's nothing wrong with that, it's just that there is no reason to favour this approach over others from an 'objective' perspective. It's highly unlikely that this was the 'original' Islam (unless you believe Islam emerged fully formed, rather than evolving), it isn't even the Classical Sunni Islam that developed in the Medieval period (which had a more clerical approach).
Things like Shiism and more esoteric strands of Sufism, etc. are older than Salafism, so viewing them as 'deviant' doesn't really make much sense if you claim to be unbiased.
I can't quite tell the degree to which you disagree with me, but I have a weird request. Even if you disagree with me conceptually, I suspect you understand where I'm coming from. I also suspect that part of your pushback is that you don't like the way in which I state my opinions. So here's the weird request. Would you be willing to try to restate my claims in language that you would find more acceptable or productive? Again, I'm not asking you to agree...
What I agree with: Religions are different and not just 'out of the same bottle', and belief affects culture, etc. It would be wrong to assume Islamic society will turn into Western type society eventually (this is too teleological for me anyway). Certain forms of Islam are political ideologies as well as religions and shouldn't get a 'free pass' in the name of 'religious freedom' as we should be aware of the paradox of tolerance
Where we differ: While it is possible to make some generalisations about Islam, it is much harder to extrapolate from these to generalisations about individual Muslims. It also makes more sense to treat Islam as multiple, broadly-categorised real-world ideologies, rather than trying to create some normative concept of what Islam 'should be' based on scripture and considering the rest 'radically unIslamic'. Doing so ignores the history of Islam and is counterproductive from a social perspective.