Lol. Oh boy.
Are you now going to claim that during the entire election process, where he claimed he wanted a wall along the border, and everybody debated the costs of a 2,000 mile wall, that he didn't really mean it and just chose not to mention the wall would span less than half of that? That he just conveniently waited until July of 2017, way after the election, to say, "Oh by the way, I meant only 800 miles,"?
You are going too far now. Keep this debate on the reservation or it just gets silly.