I'm a big fan of the leaky, insubstantial, and unreliable aspects of our experience. As someone who has spent a lot of time working on opening up my perceptions (mostly via meditation), I am all too familiar with the idea that our minds are shaped by what we believe we should be seeing. We constantly discard evidence of the senses that doesn't square with consensus, culturally approved reality. Once you begin open the perceptions, things get really interesting, really fast.
Many people are skeptical of the idea that observation, that time-honoured tool of the scientist, is not all that reliable. But the brain stumbles on certain forms of sensory input. Some things we cannot perceive accurately, no matter how hard we try.
I give you the McGurk Effect. (If you close your eyes, you'll hear "ba" again.)