An externalist view of "proof" cannot adequately work with
regards to the subjective, internal-view-to-the-outward.
That's the crux of the problem with an exclusively objective
process.
How can brains with cognitive biases come together and decide
what is or is not a cognitive bias without being cognitively
biased? Agreement?
Woo. Agreement. Challenge the assumptions behind the system from
WITHIN which you are working. It's helpful, even if later you
decide to return back to it.