This seems to be a duplicate entry of https://openlibrary.org/works/OL19085949W/Possiplex and https://openlibrary.org/works/OL42994472W/An_Autobiography_of_Ted_Nelson_Possiplex_Movies_Intellect_Creative_Control_My_Computer_Life_and_the_ likely produced both by an importer and human entry. It seems there might be just one original edition, and in my copy, the copyright is 2010-2011, so it's not certain that there's a separate 2011 edition.

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