Both sides have used some amount of science, logic and fair observations over many of their years of observation, but recently one side has stopped doing that. today we really don't have "just disagreeing tribes". We have science and logic vs opinion.
To be fair, we don't really know what works in terms of governance and what doesn't.
We do know what science currently says, but that doesn't mean it will forever indicate the same conclusion (to wit: nutrition). It does not provide much insight into a complex world like politics and civics, which are better thought of as an open system with unclear interactions between inputs.
(Also: "science" is not some unified view that has the on-high pope with decrees.)
