.  This methodology is hard to see because we often unconsciously draw conclusions about reality from our perceptions, especially our conclusions about the ordinary world. We don't see brown and green pixels on our eyeballs and go through a rigorous, conscious process and draw a conclusion, we just see a tree. But that's not because these conclusions are not susceptible to scientific investigation, but rather because the work of drawing those conclusion has been performed by evolution, not by conscious, scientific thought.  A