It will shorten some layers, yes, but your overall length will not be effected. What thinning does is cuts off hair at various lengths throughout the shaft so it's not thick and bulky along the bottom. It's like having a ton of teeny tiny layers, but that's not a very good analogy.
From being in your position, I'd say try it since it's so short, but once it starts to get longer you're going to need that extra thickness to fill it out.
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.