When i say ...                                                                                                     © 1972   

 In a completely dark room the only source of light was a bright bulb hanging right above the lecturer. The bulb was operated by a simple electronic system that responded to sounds. Silence meant complete darkness, the opposite - total brightness. In order to start reading the text, the lecturer was forced to say something like: eah...

The 'lecture' was read during 
the artistic plein-air in Osieki 1972.