Support for a connection between the Indus script and the Brahmi script has also been sought, due to graphic similarities between Brahmi and the late Harappan script. A large number of symbols and numerals of the two scripts match.[53][54][55] In his book Indus Age: The Writing System (1996), Gregory Possehl suggested that Subhash Kak's Indus-Brahmi continuity approach appeared academically most sound.