This is useful for life in general, not merely on the game-board of strategy.
I divide my officers into four groups. There are clever, diligent, stupid, and lazy officers. Usually two characteristics are combined. Some are clever and diligent – their place is the General Staff. The next lot are stupid and lazy – they make up 90 percent of every army and are suited to routine duties. Anyone who is both clever and lazy is qualified for the highest leadership duties, because he possesses the intellectual clarity and the composure necessary for difficult decisions. One must beware of anyone who is stupid and diligent – he must not be entrusted with any responsibility because he will always cause only mischief.
Now, if I refer to an “inverse Hammerstein-Equord” I am describing Boris Johnson or Donald Trump. Hammerstein-Equord would recommend relegating such people to routine duties, not the highest office. The algorithm can be broken down into a magic quadrant, which Gartner has tried to copyright or trademark, in spite of Hammerstein-Equord beating them to the punch by decades:I’m not sure where Boris Johnson goes.