Optical Illusions
The organizational mechanisms of vision are best demonstrated by illusions. Illusions illustrate that perception is a creative construction that the brain makes in interpreting visual data ....Learning does not prevent us from being taken in by these illusions.
— Eric Kandel
We do not see the world as it really is. What we perceive is a creative construction of our nervous system. Subjective phenomena such as our appraisals of the choices available to us is dependent upon our motivational state at the moment. For example, the wisdom of a first lapse is appraised differently before it happens than afterwards. Learning does not spare us from repeating the painful mistake of relapse. We are continually taken in by an illusion [The Soul Illusion], because of the tacit acceptance that our current perceptions and appraisals are valid.
The images below - while limited to the visual modality - illustrate that perception is an active construction of the mind rather than a valid representation of objective reality.