What is the main purpose and sense to have staging server the same as production?

If your staging server is substantially different from your production server, then successful deployment and testing on the staging server does not tell you much about whether the world will come down crashing on you when you finally deploy to the production server.

Staging is like the dress rehearsal of deployment. If you're not wearing the same costume you will be wearing on the night, how do you know it's going to fit, or you're not going to trip over the dangly bits.

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.