Circle of Competence is simple: Each of us, through experience or study, has built up useful knowledge on certain areas of the world. Some areas are understood by most of us, while some areas require a lot more specialty to evaluate.
Our circle of competence can be widened, but only slowly and over time. Mistakes are most often made when straying from this discipline.
The essential question he sought to answer: Where should we devote our limited time in life, in order to achieve the most success? (Charlie Munger)
You have to figure out what your own aptitudes are. If you play games where other people have the aptitudes and you don’t, you’re going to lose. And that’s as close to certain as any prediction that you can make. You have to figure out where you’ve got an edge. And you’ve got to play within your own circle of competence.
People can rise quite high in life by slowly developing a circle of competence—which results partly from what they were born with and partly from what they slowly develop through work.
Never be afraid to say “I don’t know.”https://fs.blog/2013/12/mental-model-circle-of-competence/
It is a common thing for football coaches to advise other coaches to stick with what they know. While there is certainly importance to that, I believe coaches should be careful in how we take the advice.
In order to follow that advice you are making a decision, and it’s an important one. You are essentially deciding between your knowledge and your team’s ability.
Which one is easier to improve?
This also gets into the thought of “we do what we do”. Again, be careful.
What if what you do is what the other team is best at stopping? You can either try to beat down that wall or go around it, but you can’t go around it if you only have one thing you know how to do.
There’s certainly a paradox with this thought. Yes, we need to be great at what we do. In order to be great at something you need to devote time. You could easily argue the more time you spend doing something, the better you will be at that thing. However, is that thing enough to allow success in all situations?
At the end of the day this is a question about what we do with out time. What will we spend our time learning? What will we spend our time repping? What will we spend our time testing? Do we have enough time to diversify and still be effective at each element?