The error message you're getting from bash and the fact that which cucumber doesn't give any output indicates that the cucumber executable is not on your path. Check the RubyGems path by running gem env and update your operating system path accordingly.
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.