What are the advantages of a specific defense?

What are the advantages of a nonspecific defense?

This Is Biology

and there are no choices

Monocyte/macrophages are two non-specific immune defenses. If you had no skin it would be pretty tough to roll around in the mud without getting an infection. Also, without the WBCs chillin in there to catch anything that happened to break through you would get an infection every time you get a paper cut.