How to write vectorized functions in MATLAB?

Update 2 (to address your updated question).

The problem with nested loops is not the nested loops themselves. It's the operations you perform inside.

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.