The novel ďBlack BoxĒ is a letters novel: the plot is presented through letters. This structure gives the plot a dramatic character and minimizes it to the major disagreements and tensions between the correspondents. The letters enable their writers to say things that canít be said out loud or in personal encounters. In this way of correspondence the reader can reveal the weave of the plot behind the letters step by step.

Their past is revealed through those letters in which they think back of themselves or their addressee so they can explain the reasons for their behavior, seven years ago and now.

Ilana writes 14 letters which are monologues and 9 of them are intended to Alec Gideon. Alec writes 4 letters to her and one to Boaz. Michelle Somo writes 3 letters to Dr. Gideon.

Each character speaks in the letter in its own language: Ilana writes in a lyric- descriptive language, full of symbols and metaphors. Alexander Gideon, a former military officer and a scholar uses dry straightforward language in his letters except the last one which is a little more poetic. His drafts present clear, decisive philosophical determinations.

Michael Somo a new immigrant from Algeria writes in Hebrew that he had adopted systematically when he studied in Paris. His language is simple, a bit childish, flattering and spiced up with verses from the Bible and the writings of Jewish scholars. His last letter which concludes the book is a collection of verses from chapter 103 in the book of Psalms.

Boazís language is dull and inarticulate both in style and in writing.

The novel consists of letters, telegrams, reviews on Dr. Alexander Gideonís book and drafts he had written on index cards. There are 51 letters and 56 telegrams in the novel. The correspondence spreads out over 9 months between February and October in the year 1976.