Does a conclusion should be base on the essay?

a conclusion should be based on the essay or writing topic you wrote, because if it is not based on the essay, it would be off topic. It should not repeat info previously stated, and it should not pose questions. THis is an example of a good conclusion based on a essay written about the book, the outsiders.

Reading this book provoked me, because I now realize discrimination and humiliation can have disastrous effects. I think that no one should go through the same pain as the greasers did, and that no one should be segregated because of class difference; after all, we all are human.