If you move the costly operation to an external library you could easily queue it up and execute it using something like delayed_job ( github.com/tobi/delayed_job/tree/master ) which would remove the risk of it halting the request at all.
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.