system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] What are the walls/wings(?) of the Tie fighter design?

Also, why does the X-Wing have 4 fins?
gpt
Those are solar panels. Sometimes you can tell that eyeball is freshly charged and ready to kill you by glistening on it's panels.

Although, admittedly, if you get stranded in deep space, the renewable energy source won't really save ya'.

> Also, why does the X-Wing have 4 fins? 

I believe it's largely to accommodate four laser cannons. As you know, it's inadvisable to have two hard drives in a computer to be lying on top of each other, but simultaneously firing two laser cannons stacked on top of each other is even more inadvisable.