"The Fiction Bias"

From time to time, the folks over at Overcoming Bias like to speculate on or warn about what they call the "Fiction Bias" -- essentially, that fiction represents an inherently fallacious approach towards the world, and should therefore be avoided and rejected in the interests of objectivity. I've always been struck by confusion towards this stance -- after all, aren't most models used until the next best thing comes along, after which it's discarded as so much meat? Do scientists really approach their theories as essential truths? My own experiences with academic essays and blogs lead me to believe no, so the stance must surely have it's root in some other problem.

Overcoming Bias has always struck me as a very sound and useful advisory board for looking into personal biases dangerous to learning. It therefore strikes me as a little disappointing that people that should have an idea of what a wide variety of different mindframes can be brought to bear on a subject insist on positing the existence of a better/best style of the discussion of ideas. I suppose we all take certain things for granted -- I definitely accept a priori that "all models are wrong, but some are useful."

I could go on, but as I've already made clear most of my stance at my comment here, I'll put the stick down and leave the bush be.