The problem testing supervisors from the shell is that the supervisor process is linked to the shell process. When gen_server process crashes the exit signal is propagated up to the shell which crashes and get restarted.
I would suggest you to debug/trace your application to check what's going on. It's very helpful in understanding how things work in OTP.
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.