Why is it difficult to count the original number of Australian Aboriginal languages?

Determining the precise number of original Australian Aboriginal languages is difficult for several key reasons:

• Distinguishing Dialects from Languages: A primary challenge is the linguistic difficulty of deciding whether two speech varieties should be classified as separate languages or merely as dialects of the same language. This distinction is often relative and can be influenced by arbitrary criteria.12
• Extinction Before Documentation: Many speech varieties became extinct following European contact before they could be systematically recorded by researchers.1
• Fragmentary Records: Much of what is known about these lost varieties comes from incomplete or poorly transcribed word lists created by missionaries, which are often insufficient for accurate classification.1

Because of these factors, estimates of the number of distinct languages at the time of European contact typically range from 200 to 300. While a major effort to record surviving languages began in the 1970s, the lack of comprehensive data for extinct varieties remains a significant barrier to an exact count.31