Answer:
can you please post a picture of the first paragraph or say what the name of the book is?
I'll answer your question
Explanation: It is important not to over-rehearse a talk or speech.
Thesis definition: a statement or theory that is put forward as a premise to be maintained or proved
So,
Without having a recognizable thesis, your reader will not fully understand what point you are trying to get across. Furthermore, your writing will seem to have no meaning or purpose, and will not inform the reader. To clarify, if you do not have a recognizable thesis, your writing would be pointless.