Why did Martinez labour on so long with an approach that became doomed? Quite simply, a single mindedness and stubborn belief in a doctrine.
Or perhaps it's because 4-4-2 is still the taboo of modern English football; a system that has became seen as the anti-Christ to a new doctrine.
Whatever it is, it's incredibly frustrating. I'm not advocating using it in the medium to long term, however in the short term it's worth the risk.
4-2-3-1 or however people want to label it simply isn't working for us and hasn't for quite the while now.
Foe X amount of minutes in games Lukaku looks hopeless on his own up front, Valencia comes on and Lukaku looks like a different player, Koemans you would think can see this.