How to 'get' the spring prototype beans cleanly?

That is not 100% correct. You can have a factory that take the Interface (class) of the Domain objects that needs to be create. You can inject that factory in you class.

So you will get all the requriements you asked for.

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.