Is a past finite order the inner basis of space-time?

          @misc{ scivideos_PIRSA:04100022,
            doi = {},
            url = {https://pirsa.org/04100022},
            author = {Sorkin, Rafael},
            keywords = {},
            language = {en},
            title = {Is a past finite order the inner basis of space-time?},
            publisher = {Perimeter Institute for Theoretical Physics},
            year = {2004},
            month = {oct},
            note = {PIRSA:04100022 see, \url{https://scivideos.org/index.php/pirsa/04100022}}
          }