(quote from RealReality.org/Real_Faith_and_Reason_Vol_3_-_Scientia.pdf)

Human senses are weak and tricky and that makes human interpretations of observations or experiences unreliable.  Human appetites, preferences, and preconceptions create biases. The biases deceptively concoct stories. They make up notions beyond reality. They filter the ability to see reality as it is. That bias acts like a filter that controls interpretation, which, in turn, confirms the bias and reinforces the appetites, preferences, and preconceptions.

(end quote)