Dravidian is the language of the Indus writing

The Dravidians had their own tradition of writing. It would appear that they introduced writing to the Indus Valley. They continued to use this writing on their pottery in South India and later punch-marked coins. This is supported by the discovery of writing in South India dating back to before 600 BC. In a recent paper Srinivasan et al. argue that the Indus Valley writing was a syllabic multilingual writing system. Although this is their opinion, it appears that the writing system used in the Indus Valley was also employed in South India and that the language of the Indus Valley script was Tamil. They argue that the Indus Valley seals were ‘flash cards’ used by the Indus Valley population to learn the writing systems. Srinivasan et al. believe that they can demonstrate the multilingual nature of the Indus Valley writing by discussing Indus Valley consonants and vowels without describing how they deciphered the language; and they imply that ancient Dravidians wrote in Brahmi and Kharosthi even though Tamili inscriptions are much older than these writing systems. The fact that Srinivasan et al. make these claims without explaining their decipherment, makes these totally invalid. In this paper, I will review the evidence that the Indus Valley writing was written in Dravidian, and that there were probably no Aryan speakers in the Indus Valley.