What we believe we are seeing is the result of how our brains define what is real or not real. Optical illusions are an example of how our brains accept what is/is not reality. If we do not understand what we see, our brains fill in the missing pieces with what we have have seen, heard, thought to be true.
The pictures on this web site are horrific to the untrained eye and mind but remaining rational is an important factor in finding the truth. Knowing that there must be a logical explanation for these unidentifiable objects spurred me on. I refused to believe that something 'weird' had invaded my body, therefore my mind refused to see what others in the same situation saw.