Creating a fully functioning machine is genius. Maintaining it is legendary.
Jose Mourinho has consistently created such machines. Well-oiled, well-practiced and well-deserving, his squads have brought countless trophies of the highest acclaim to cabinets across Europe.
What he does is pragmatic. He quickly assembles an able squad - two players for each position - and instills his footballing mantras and strategies into their malleable brains.
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They listen to his God-like words and the cogs start to turn. They play; they don't concede; they score; they win; they repeat.
A combination of their own footballing genius and belief in their manager's proven expertise is what makes this a bulletproof formula.
When the pressure turns up, which it rarely does, Mourinho has been able to dispel any trouble that brews in paradise.
Always armed with a contingency plan - a scapegoat and an excuse - he notoriously simmers down any pressure that could upset the flow of his team.
However, the cool, calm and in-control leader that Mourinho personifies has started to boil and melt under the heat of the press as of late.
Ever since the unusual firing of female club doctor Eva Carneiro and the controversy that followed, the Portuguese seems to have taken an alternative persona; the persona of a man with problems.
He appears agitated, frustrated and isolated. For all the times he has stuck by his players, you'd think through sheer loyalty and gratitude they would up their game for him.
This becomes a vicious circle, though, when so much of the team's morale and confidence is driven through the man himself.
Six defeats by November is unheard of for any Mourinho side, let alone the reigning champions of England. The true test for the 52-year-old will be in the upcoming weeks, where he attempts to dig himself and his team out of this unusual rut; the kind of rut that would usually see contracts terminated.
For once, Jose, the blame is on you.
This is Mourinho's toughest managerial challenge to date. Should he turn things around, he will rightfully cement himself amongst the legends. If not, we all may have to re-evaluate the next time we call him the 'Special One'.