Some critics of this thesis point out that it fails to explain as to why Peshawar became the centre of Hindko language. According to Khatir Ghaznavi's contention, Attock should have been Hindko's centre because it is situated on the confluence of the Indus and the Kabul rivers. According to some noted historians, Attock has rather served as a natural border between Central and South Asian landmasses. Moreover, Khatir Ghaznavi fails explain why Hindko should be the language of Peshawar, a predominantly Pakhtoon city.

any idea?