The following semester I ran into the student in an MIT cafeteria. In the past month, with his roommate's acquisition of new software for his Macintosh computer, my student had found his own key to Derrida. That software was a type of hypertext, which allows a computer user to create links between related texts, songs, photographs, and video, as well as to travel along the lnks made by others. Derrida emphasized that writing is constructed by the audience as well as by the author and that what is absent from the text is as significant as what is present . And the things he might have linked but didn't.
Meanings are arbitrary, as arbitrary as the links in a stack.
It's like Derrida. The links have a reason but there is no final truth behind them.