Second half of the book

Did Bulgakov think about all the things that his readers found and find in Master and Margarita? Did Stanislav Lem think that in the Solaris station it will be possible to find out a dilapidated ghost castle? Did Sophocle think about the Oedipus complex? We will never know this. The role of the author ends with the publication of the work. Next, it all depends on the reader. The reader is a full and, most importantly, full co -author of the writer. It was he who, according to Joseph Conrad, writes the second half of the book.
In the new book of Daniel Clger, an essay are collected, which he himself calls notes on the fields of books. Perhaps they are subjective. But - is it important?