The Eagles employ the same quarterback they had this time last year, when their dynamic offense was the envy of the league, drawing the Sistine Chapel ceiling-level reverence that now accompanies every outing of the Rams, Chiefs or Saints.
They have the same offensive line, except Jason Peters is playing instead of Halapoulivaati Vaitai, which ought to be a good thing.
They are missing running back Jay Ajayi from last year, but on paper they actually have a stronger receiving corps, when you add in trade-deadline acquisition Golden Tate.
So, why is everything so very different?