Q. Why ?
A. To avoid visual damage.
Q. How thick should the wall be ?
A. Follow the local custom.
Q. How high ?
A. 4 amos.
Q. What are 2 possible ways to translate the word Mechitza ?
A. A wall or a division.
Q. Is visual damage considered as regular damage ?
A. That is a question the gemara strives to prove.
Now may be a good time for a gem of Torah study.