Arsenal have moved themselves to the top of the Premier League by finding a plan A that works. Whereas in the early stages of his tenure in charge Mikel Arteta chopped and changed systems to suit the opposition, his side now have a distinguished style of play.
Oleksandr Zinchenko and Ben White flood the midfield to give the Gunners dominance. Further up the pitch Bukayo Saka and Gabriel Martinelli have been imperious, while the movement of Gabriel Jesus has been too much to live with.
It is largely for this reason that Arsenal have already scored 12 more goals than they managed in the whole of last season. Even someone as principled as Arteta will have a plan B though.