The Ta-Ta theory is one of the many theories about the origin of language. Technically, it was first conceptualized as a sarcastic response to the theories involving the origin of language. The theory specifically suggests that speech came from mimicking manual gestures through the use of tongue and mouth.
The theory remains to be a speculative form of theory, meaning it remains to be unsupported by any scientific proof. One best example of the theory is using ta-ta to mean goodbye.
