Some badges like the Enlightened requires one to be the first to answer. I have cases where my answer was accepted like this one, and the answer previous to mine was deleted, thus making my answer the only one.
Is a deleted answer counted as the first answer?
Does it prevents a question for awarding the "first to answer" type of badges?
I understand that some answers might be related to experience, but I would be inclined to accept an answer that provide an official documented reference.