Replace system call in linux kernel 3?

I would recommend using kprobes for this kind of job, you can easily break on any kernel address (or symbol...) and alter the execution path, all of this at runtime, with a kernel module if you need to :).

Write a LKM that would be better optio. What do you mean by replace,do you want to add a new one.

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.