A Circle of Competence is the set of topic areas that align with a person's expertise.
If the entire world of information were to be expressed in a circle, an individual's Circle of Competence is the small sub-circle that represents their expertise.

1/ An Allegory of Finance
— Sahil Bloom (@SahilBloom) July 18, 2020
I have been posting a lot of educational (and humorous!) threads on finance, money, and economics.
My mission is simple: to demystify these concepts and make them accessible to everyone.
All of the threads can be found below. Enjoy and please share!
Stagflation 101
— Sahil Bloom (@SahilBloom) September 2, 2020
The term "stagflation" is used frequently in discussions of monetary policy and risks in the post-COVID world.
But what is stagflation and how does it work?
Here's Stagflation 101!
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— Abhishek Kar (@Abhishekkar_) December 29, 2020
The entire thread will have some quick pointers on options trading. These bullet points are based on experience and learning and even if you are completely new,will help you to build some perspective. So,lets go :
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— Abhishek Kar (@Abhishekkar_) October 11, 2020
This thread is about the trader who with his reckless trading destroyed the entire Barings bank. In case you would like to read more such informative threads,do not forget to retweet and share as acts as encouragement
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— Abhishek Kar (@Abhishekkar_) July 21, 2020
The following thread will have top 5 for everything you need in the world of stock market and as learner who wants to REALLY grow. Make sure you #retweet the thread and let it reach the maximum number of people as sharing is caring.
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— Abhishek Kar (@Abhishekkar_) July 6, 2020
In the following thread you will understand a few dark truths about stock trading as a profession.
Sadly everyone touches the only green side but there has to be a balance. Don't forget to #retweet for wider reach.