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For the Byzantine saint and poet, see Kassia.

The term eikasía (Ancient Greek: εἰκασία), meaning imagination in Greek, was used by Plato to refer to a human way of dealing with appearances.[1]

It is the inability to perceive whether a perception is an image of something else. It therefore prevents us from perceiving that a dream or memory or a reflection in a mirror is not reality as such.


  1. ^ "eikasia". FOLDOC. Archived from the original on 2006-06-20. Retrieved 2006-06-22.