  Pixel detectors have been the working horse for high resolution, high rate
and radiation particle tracking for the past 20 years. The field has spun off
into imaging applications with equal uniqueness. Now the move is towards larger
integration and fully monolithic devices with to be expected spin-off into
imaging again. Many judices and prejudices that were around at times were
overcome and surpassed. This paper attempts to give an account of the
developments following a line of early prejudices and later insights.
