> Something like 80% of Australian languages are from Indian-derived language families This is wrong. No known relationships exist between any Australian Abori

> Something like 80% of Australian languages are from Indian-derived language families This is wrong. No known relationships exist between any Australian Aboriginal language and any language from India. For much of far northern Australia, no known relationships exist between even neighbouring languages! (The non Pama-Nyungan languages, to be specific.)