How the mind plays tricks

‘Everyone complains about his memory, and no one complains about his judgement.’

Francois de la Rochefoucald, seventeenth-century writer

Most of the time we have the feeling we are experiencing the world as it really is. This is because, as psychologist Daniel Gilbert puts it, your mind does a good job of creating an impression of a continuous, sensible reality.

But occasionally, we have a glimpse into the fact that things are not quite how they seem. For example, look at this picture. You know that white is white and black is black, but…

Image

… why ...

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