You can put it at the beginning, but then it has a different meaning. Instead of "the conclusion I just stated was unexpected," it means, "the conclusion I am about to draw is a predictable summary of what came before."Another question: Can we put 'after all' at the beginning, or insert it in the middle, of the question without changing the meaning?
Example: I had never trusted those people, but then one of them returned my lost wallet with all the money still inside. Can it be that these people are honest after all?
We should focus on our similarities, not our differences. In each group, there are good people and bad people, and we do ourselves and each other no favors with prejudice. After all, we all really belong to just one race: the human race.
As for putting it in the middle, there are a few places it could go, and it would mean the same as putting it at the end, but it would sound more awkward that way.
Student or Learner