A number of crucial factors have plagued Liverpool's season so far: the loss of Luis Suarez, Daniel Sturridge's injury problems, some very questionable summer recruitment.
But is their biggest problem, in fact, a lack of discipline?
Not discipline in terms of fouls or bookings - but a lack of discipline in training and a lack of firmness from manager Brendan Rodgers?
For all Liverpool's struggles this term, they have enough talent at their disposal to win most of the games they haven't been achieving results in. There is no way Crystal Palace's squad compares to that of the Reds' on paper. And yet...
The reason is, quite simply, a lack of effort - a lack of desire. The attitude of some of Liverpool's players is a spit in the face to the legends that built the club into one of the greatest in the world. Not from everyone - but from several all too happy to jog around lightly without giving 100 per cent and stand off opposition forwards, not committing to tackles.
Against Crystal Palace, a side that had won just one point in their last five games, Liverpool could have walked it with the quality in their side. Instead, they played well for 10 minutes, then (as usual) deciding to - for some reason - give up. Steven Gerrard and Martin Skrtel won 0% of their tackles. There was no urgency and by the time Palace had won 3-1, the home fans were singing 'can we play you every week?'
So is Rodgers not being hard enough on his squad?
There is only so far a lovable approach can get a manager. It may be time for the Northern Irishman to take charge and say enough is enough from his side - especially his defenders, who have not shown an iota of improvement since Rodgers came to Anfield (rather showing a very rapid regression).
One thing is unforgivable in professional football: a player that doesn't give 100%. Liverpool haven't given 100% once this season.
And, if Rodgers doesn't do something about it, something will be done about him.