Without knowing more about your program, I'll refrain from making any comments about the approach you've taken and comment only on the code you've posted. It sounds weird to me that a 44MB file is filling a 2G heap, though.
There are two ways to get value from StringBuilder.
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.