The problem lies in the $current_reviewers variable, it is not accessible within the php expression that is passed as the checked value. For this you can use an anonymous function and to use the outside variable, use the use keyword.
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.