On contradictions in literature-- I once heard Joseph Heller speaking about Catch-22. He said somebody had sent him the results of a computer program designed

On contradictions in literature-- I once heard Joseph Heller speaking about Catch-22. He said somebody had sent him the results of a computer program designed to arrange the events in "Catch-22" in order to minimize the number of unresolvable contradictions between forward and backward references (e.g., "A was before B" and "B was before C" but "A was after C"). I don't remember the exact count, but it was in the hundreds.