It is true that statements with qualified terms tend to be true.
He learns that although he has been trained for a pilot then he should learn that seeds of success may be found even in a failure
Persuasion I think. Good luck tho
It helps bring the reader into what you are going to talk about it's like a tour guide and you slowly showing them what it's about but you also want to interest them so they read on and get to the central /main idea