i found tail at the very bottom
near clone is your answer a doppelganger is basically a twin of your self
I’m a little confused what exactly is your question?
If you are ignoring someone based on their ethnicity, nationality, skin colour etc then that’s a form of racism
This was an event in Vonnegut's own life, and the novel is
considered semi-autobiographical. from his time as an American soldier and
chaplain's assistant, to post war and early years. It is generally recognized
as Vonnegut's most influential and popular work.