It is rather difficult to comment on this book. I think I managed to express what I intended. This work seems quite satisfactory in my eyes. I can only add that it became a juicy food for the reviewers. I read reviews so profound I barely understood them... Starting from the obvious Freudian interpretation... One American reviewer made a fatal mistake in that he was unaware of the fact that the idioms of the Polish original are different - hence they do not allow such conclusions.
I never really liked Tarkovsky's version of Solaris. Now 21st Century Fox is in the phase of preparations for a remake.