3. Why haven't scholars been able to decode the Indus Script?

1 Dr Asko Parpola and Iravatham Mahadevan agreed it was syllabic writing system,but tried to read as pictograph.That is why they failed in their attempts.

2.Most of the scholars believed that the direction of writing was from Right to Left No language on earth was written from right to left during the IVC period ,Doble Hofer in his Voices in Stone has clearly stated that North Semitic people started writing from right to left during 1400 BCE while east and west Semitic people continued to write from left to right , Dravidians were right handists ,hence they could write only from left to right. Therefore R-L dogma is utterly a false one.