What does the statement 'the observer is the observed' mean?

According to Osho, 'the observer is the observed' names a mystical, non-dual realization beyond intellect’s subject–object split. In meditative awareness, the seer and the seen are not two; there is only witnessing, and the mind’s divisive movement subsides. This insight belongs to the unknowable mystery: it cannot be grasped by logic, only lived, transforming perception from analytical separation to direct, undivided presence.