Why Should Authors Be Using Customer Personas?

i found that customer personas, or avotars are just two terms for the same thing. They should be advertising their books rather than their tag line. Thereis a technique that you've probably heard me talk about on this poncast called picking a timothy. It's a practice inspired from one of the books of the bible is written to a specific person named timothy. By writing to the one paul wrote to the many, the fact that he had a specific audience for his book helped it be clearer and more resonant.