* "Can't speak in public" is a spectrum: Some people have a mild anxiety about public speaking, while others experience debilitating fear. Defining a hard line for who "can't" speak in public is difficult.
* No reliable data: There aren't large-scale, reliable surveys specifically focused on public speaking ability or fear.
* Varying definitions: "Speaking in public" itself can be interpreted in different ways. Is it a presentation to a large audience, a small group discussion, or a conversation in a casual setting?
However, we do know that:
* Public speaking anxiety is common: Studies show that public speaking is one of the most common fears, with some estimates suggesting over 75% of people experience some level of anxiety.
* It affects people differently: The degree of anxiety and avoidance varies greatly from person to person.
Instead of focusing on numbers, it's more helpful to understand that public speaking anxiety is a real issue for many people. If you struggle with it, know that you are not alone, and there are strategies and resources available to help you overcome it.