Your validations enforce the business logic of your application. If you always want the Post object to save, regardless of the state of the associated comments, you can save posts, and comments independently. This would allow you to iterate over a collection of comments, and try to save each on, continuing if there is an error.
Check out the documentation http://apidock.com/rails/ActiveRecord/Associations/ClassMethods/has_many. It shows that a has_many association is validated by default when the parent object is saved. You can set it to false like this.
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.