In the first part of the movie, where he holds a painting by the Master, Ottavio erases the signature with a brush because at first he wanted to prevent the Master's name from being recognized. But he unconsciously delete the date, not the name that is on the other side of the picture. When he became aware of the lapsus, Ottavio understood that his unconscious was right and he included the name and surname of the Maestro also because he had been dead for years. Rosati did the opposite with the name of Fabio: at first the name was the real one but he had to mask it after Fabio's protests and threats. The lapsus is typical of psychodrama where errors are not just mistakes to be corrected with a new take but part of the text that emerges from the unconscious.