Sooo.... anything without sources is useless in a serious debate and therefore a waste of time? Do you ever not debate?

If you are a reader (not researcher) I would encourage you to pick up 'Stars in Their Courses", which is the book version of Foote's chapter that deals with Gettysburg. I would grant that it is not a footnoted source and won't give you defensible data that you could throw at Baby Boy or UnionPower, but you might just enjoy the story. Give it a whirl.