To all my knowledge you cannot implement interface methods internal . As you stated you can implement them explicitly but then someone can still do ((IScanner)myScanner). SetHardware(hw).
If you are implicitly implementing an interface I believe that the member must be declared public. In your example, CA attempts to implicitly implement the X() method but isn't declared public. If you want to keep X() as internal then you should use explicit interface implementation.
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.