* Sign languages are natural languages: Like spoken languages, sign languages evolved organically over time, with communities of deaf people developing ways to communicate visually.
* Sign languages are diverse: Different sign languages exist around the world, each with its own unique history and development.
* Sign languages are constantly evolving: Just like spoken languages, sign languages change over time as new signs are created and old ones evolve.
What we can say is:
* Deaf communities are the originators: Sign languages arose from the need for deaf people to communicate with each other.
* Sign languages have long histories: Some evidence suggests sign language use dates back centuries, even millennia.
* Individuals have contributed to sign language development: Throughout history, individuals within deaf communities have played crucial roles in shaping and expanding their local sign languages.
It's important to recognize that sign languages are complex and rich languages, developed by deaf communities and passed down through generations. They are not simply "hand gestures" but fully formed languages with their own grammar, syntax, and unique features.