Here's why:
* Natural Observation: Humans have always observed and interpreted visual cues, including lip movements.
* Early Uses: The deaf community has relied on lip reading for centuries as a way to communicate.
* Formalization: Formal techniques for teaching and learning lip reading emerged in the 19th century, with figures like Alexander Graham Bell playing a significant role in promoting its use and development.
So, while no single person "invented" lip reading, it's a skill that has evolved through observation, necessity, and dedicated efforts to refine and teach it.