That's because when you do selector(action) it's a reference to a selector called "action". In other words, the argument to selector is parsed as a literal, not a variable.
This is not a false positive, it is a real (your) bug.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.