* No written records: The Neolithic period predates written language by thousands of years. We only have archaeological evidence like tools, pottery, and structures.
* Language changes over time: Languages constantly evolve and change. What was spoken in the Neolithic period would be drastically different from any modern language.
* Diverse cultures: The Neolithic period spanned a vast geographical area and time period. Different groups of people likely spoke different languages.
However, we can make some educated guesses based on the following:
* Language families: Some modern language families like Indo-European, Sino-Tibetan, and Afro-Asiatic are believed to have originated in the Neolithic period. This suggests that proto-forms of these languages may have been spoken then.
* Linguistic archaeology: This field attempts to reconstruct past languages based on archaeological evidence and the way languages change over time. While it's not definitive, it provides some insight into the potential structure and features of Neolithic languages.
In summary, we don't know the exact language of Neolithic people, but we can make educated guesses based on modern language families and linguistic archaeology.