If you use the default SpamAssassin configuration provided, Bayesian Learning will be enabled. The Bayesian database is then built incrementally by learning from incoming mails which hit the spam or nonspam thresholds. For details and further information see the SpamAssassin documentation, and the sa-learn documentation.
If you are using Microsoft products, read the "How to..." guides supplied here and here. More.
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.