Ah, Boyd. Master of all things. As a good friend once explained the cult of Boyd as “it’s like the Americans wanted to scream, ‘WE HAVE A MILITARY GENIUS, SEE!’ while losing in Vietnam.” But still, the underlying theory is sound, and this chart does a good job of breaking down all four letters.
I’m a little embarrassed to say I hadn’t seen it before (the original website dates it back to 2006). It really is an excellent overview of the OODA Loop, including all the cultural and individual particulars that inform a decision. Also, note the sheer number of ways to ‘observe. The chart can be expanded or condensed for as long as you need, be it split-second decision or drawn-out debate process. And if nothing else, you have a crucial tool to get all inside your enemy’s head.
There is a real risk, though, of reading too much into OODA. More guidelines than rules. And so forth.
That chart is not complicated enough!