Impressive artwork that challenging our notion of perception in as the reality of viewing a scene does not coincide with realist artwork. The trick is we usually do not perceive every detail of a scene in one moment. When our eyes move over the scene, and this requires an interim of at least a few seconds and then environmental shifts in lighting and slight changes in atmospheric conditions have already skewed from one portion of the scene to another. Amazing right.
What human see through their eyes is not that 100% what they saw. Yet, they skewed what they perceived and though that it was everything. Pathetically, they never know when they are actually wrong.