Knowing from the Inside - part 2

In the last entry I had decided to create an imaginary world whose population of strange and wonderful beings operated in a reality opposite to that of our rational scientific view. This would include their way of knowing themselves and the world. And in that blog I said that I thought science’s assumptions about objective knowing, and its categorization of the ”subjective” as illusory, were fundamental to the scientific worldview. With its focus on the quantifiable, science has an unavoidable focus on the material world. It focuses on what we can measure and denies what we can’t. Outsides are real, and insides illusory.
So that aspect of science is what I will use to create the imaginary world. I'll call the inhabitants of our rational scientific world Outsiders, and the inhabitants of the new imaginary world Insiders. Everything is inside out. In the world of the Insiders, the outsides of things are considered to be illusory. The only reality is to be found within the subjective - on the inside. What you can measure quantitatively is seen by Insiders to be dangerously misleading (in terms of seeing or knowing reality) especially if unconnected to any inner knowing. True objectivity is to be found in what arises on the inside. I’m not saying that everything that goes on in their heads would be considered objective truth (which would be freaky), but I am saying that objective truth could be found only within – on the inside.
So, not so shockingly, the Insiders think that people are really to be known via their insides, and not by outer appearances (or what you could see with any kind of scan.) Perhaps more surprising is that, since they think that the outside appearance of everything is illusory, then everything has a hidden insides. A tree is not just a tree. Its reality lies mostly on the inside and is not confined to its external appearance (or the external appearance of all it’s parts if you dissect it). It has an inner life.
It seems to me that this would make a very different kind of world. It would be a world where nothing would be what it initially appears to be. In fact, it would be not a world of things, but a world of beings – a world of who’s and not what’s. And there would be a kind of equality (since it's all who's), which would require a kind of sensitivity to deal with and be a part of. After all, you’d never immediately know who it was you’re really dealing with.
From my perspective the next question, for next time, is how would you know anything in the Insiders world?