The document discusses the Indus script and proposes that it can be deciphered by identifying the underlying language as Dravidian. It provides background on the Indus civilization and summarizes previous unsuccessful attempts to decipher the script. It then examines evidence suggesting the script encodes a Dravidian language, including loanwords in Vedic Sanskrit, shared phonological features between Indo-Aryan and Dravidian, and the geographic distribution of Dravidian languages. The document analyzes the evolution of the Indus script and argues it represents a fully developed writing system, not just non-linguistic symbols. It concludes by proposing a Dravidian solution could enable decipherment of the long unsolved Indus script