Rails holds some conventions that enforcement of data integrity should be done in the application, not in the database.
After having worked with this issue for a while, I don't think it's part of the core Rails philosophy that foreign keys should not be enforced by the database.
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.