Sounds like just a coincidence because an oil change would never cause your CEL. Something else has happened at about the same time. Get the OBD code checked to find out what caused the light.
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.