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This article is part of Football FanCast's Opinion series, which provides analysis, insight and opinion on any issue within the beautiful game, from Paul Pogba's haircuts to League Two relegation battles...

Insanity is doing the same thing over and over and expecting different results.

The great Albert Einstein once uttered the above witticism, and it is clearly one that Unai Emery has never come across.

To some Arsenal fans' frustration, the Spaniard started with a midfield containing Granit Xhaka and Matteo Guendouzi screening the defence with no Lucas Torreira in sight, similar to the way in which the Gunners lined up last time out against Watford.

Having been in woeful form against the Hornets - conceding a staggering 31 shots on their goal and taking just seven themselves - the north Londoners got off to an awful start against Aston Villa on Sunday as John McGinn netted in the 20th minute.

Despite an equaliser courtesy of Nicolas Pepe's penalty, Emery's side's character could once again be up for debate as they allowed Brazilian striker Wesley to put Villa back ahead just two minutes later.

Going into the last ten minutes 2-1 down, a spirited fightback saw Arsenal win 3-2 thanks to goals from Calum Chambers and Pierre-Emerick Aubameyang, but the comeback should not overshadow reality - the performance against Villa was nowhere near good enough, just like the one against Watford wasn't either.

Two games against sides currently residing in the bottom three should not cause this much stress for everyone involved with the Gunners, and especially at home, Villa should not be having 14 shots or scoring two goals.

Team selection is a major worry. Chambers - scorer of the crucial equaliser - was only introduced after Ainsley Maitland-Niles was sent off, and was perhaps unfairly dropped having helped keep a clean sheet against Eintracht Frankfurt in midweek.

It is equally questionable as to why David Luiz and Sokratis kept their places after the Watford horror-show.

Emery managed to live another day thanks to Chambers and Aubameyang, but the three points on this occasion should not mask some pretty telling truths. 45 shots conceded in two league games borders on the ridiculous.