This is the 16457th most frequent Turkish word.
yazarsa
"If (he/she/it) writes."
In this sentence, 'yazarsa' is used as a conditional clause, meaning 'if [someone] writes', indicating a possibility or potential action that predicates another event.
Bu kitabı yazarsa çok okunur.
If they write this book, it will be read a lot.
Here, 'yazarsa' again conveys a conditional situation, connecting the action of writing biographies to the resulting interest in the subject matter.
Tarih dersinde yazarların hayatlarını yazarsa ilginç olur.
If they write about the lives of writers in history class, it would be interesting.
In this sentence, 'yazarsa' predicates an action upon a condition, implying speculation about the quality or nature of the outcome of the writing process.