All the talk since Ruben Amorim landed at Manchester United has revolved around his player quality, formation and potential signings.
But Saturday's 3-2 home defeat by Nottingham Forest served as a brutal reminder that Amorim's core problem is none of those things.
Mentally, this current crop of United players have proven that they havenot got the minerals to deal with adversity.
Collapses have become a normality in recent years. Amorim witnessed his first at the start of the second half against Forest.
An Andre Onana clanger - fitting of his first season at Old Trafford - sparked a frenzy. Chris Wood took full advantage of that shortly after.
It was startling to see such familiar issues prominent under yet another manager.
Panicked game management that looks as if they black out from all instructions? Check.
Shocking body language at the slightest hint of things going wrong? Check.
Slowing down the tempo on the ball while trailing in fear of making mistakes? Check.
Emotional, mindless fouls after a decision goes the other way? Check.
There is no self-awareness or accountability. If these players believe they can hide behind the excuse of 'it's a new boss - United are bound to lose games', they can think again.
The red side of Manchester have revelled in Manchester City's calamitous current streak of results, winning just once in nine games.
But United have lost two Premier League games on the bounce with City, Newcastle United and Liverpool to come in the next five outings.
While it is a baptism of fire for Amorim, he will be learning a lot about the players he wants to bring along for the ride in the coming years during this relentless run.
Amorim cannot just adapt how his players think tactically. He must develop how they apply themselves mentally too.