**The Career Framework That Prevents Expensive Mistakes (And When to Ignore It)**
**Understanding the Circle of Competence**
I once watched a brilliant software architect lose $180,000 in six months, not through bad code but through stock picks. Despite his genius in building systems for millions and leading complex projects, he assumed his intelligence in software would carry over to biotech investing. It didn’t.
This wasn’t a case of incompetence but a violation of a crucial mental model in executive decision-making: the circle of competence. This concept can save you from costly career mistakes and transform how you approach decisions and investments. Over my 20 years consulting in capital markets, AI strategy, and organizational transformation, understanding my circle of competence has been my compass, and I owe a lot of my success to its principles.
## What is Your Circle of Competence?
Your circle of competence represents the domains where you have deep, reliable knowledge and can make accurate predictions, recognize patterns, and understand the full consequences of decisions. It’s where you know what you don’t know and have integrated lessons from past mistakes.
Inside this circle, you have proven expertise; outside of it, you’re more likely operating on surface understanding and borrowed opinions. Warren Buffett and Charlie Munger popularized this in the investing world, emphasizing that knowing the boundaries of your competence is what truly matters.
Here’s how I, Adnan Menderes Obuz Menderes Obuz, define it for executives:
– **Inside Your Circle**: You have accumulated experience, recognize unique patterns, and have scar tissue from past mistakes. You’re able to make accurate predictions and understand deeper consequences.
– **Outside Your Circle**: You’re guessing with confidence, misunderstand complexity, and can’t tell what’s good advice versus nonsensical.
## Why Smart People Misjudge Their Circles
Even exceptional executives fall into cognitive traps regarding their circles of competence:
1. **The Intelligence Illusion:** Assuming intelligence is transferable across domains. My transition from capital markets to AI taught me that each domain requires unique expertise. It was only after years of learning did my AI strategies truly become valuable.
2. **The Confidence Gradient Problem:** Confidence declines gradually from your competence center, but knowledge drops off sharply. I witnessed a CMO mistakenly apply B2C strategies to B2B sales, resulting in failure.
3. **The Credentials Trap:** Titles and success imply judgment transferability, but social reinforcement of expertise across domains can blur boundaries.
## Mapping Your Circle
Here’s a practical method to define and navigate your circle:
– **Step 1: List Competencies:** Write domains where you provide advice or hold strong opinions.
– **Step 2: Prediction Test:** Can you make accurate predictions in each domain? If yes, you’re likely inside your circle.
– **Step 3: Costly Mistake Test:** Have you learned from significant mistakes in this area?
– **Step 4: Unknown Unknowns Test:** Can you articulate what remains unknown in this domain?
– **Step 5: Draw the Boundary:** Use a Venn diagram to identify core competence, adjacent competence, informed interest, and outside areas.
## When to Stay Inside Your Circle
Most of the time, sticking to your circle is beneficial:
– **Resource Efficiency:** Focus yields higher returns than spreading oneself thin across multiple domains.
– **Reputation Compounding:** Deep expertise leads to more significant opportunities, unlike being a generalist with shallow knowledge.
– **Avoiding Expensive Mistakes:** Staying within your circle typically avoids costly errors, as demonstrated by the restaurant investment I thankfully avoided.
– **Decision Quality Under Pressure:** Reliable decisions come from tested knowledge within your expertise.
## When to Expand Your Circle
Sometimes, strategic growth requires stepping beyond your current competence:
1. **Domain Obsolescence:** If your area is becoming irrelevant due to market changes, strategically expand into adjacent areas where you can transfer some skills.
2. **New Strategic Goals:** Whether seeking a C-suite position or new ventures, deliberate expansion is necessary. My move to AI strategy involved a planned approach rather than overreach.
3. **Combinatorial Advantage:** Combining knowledge in two domains can create unique value, as I experienced merging my understanding of capital markets with AI.
4. **Intellectual Curiosity:** Driven expansion into areas like longevity research aligns with long-term bets, though it requires intention and patience.
## The Impact of AI on Circles of Competence
AI is transforming the boundaries of professional competence:
– **AI Democratizes Surface Competence:** While making foundational skills accessible, it highlights the value of deep expertise and judgment-based decisions.
– **Polymath-Specialists Dominate:** Combining deep knowledge in few areas with AI-augmented understanding elsewhere excels in today’s environment.
– **Accelerated Expansion:** AI shortens learning curves but can’t substitute for experience-derived intuition.
## Implementing This Framework
This month, apply these strategies:
– **Assess Decisions:** Confirm decisions fall within your circle. Seek expert counsel when they’re outside it.
– **Performance Reviews:** Use this framework to guide career planning—highlight core competencies and identify growth areas.
– **Strengthen Boundaries:** Adopt the habit of admitting knowledge limits in meetings; this enhances credibility.
– **Circle Expansion Project:** Treat expansion into new domains like a structured project.
## Conclusion
True mastery comes from understanding what you know and recognizing where you’re simply guessing. Whether you’re an executive facing complex challenges or pursuing new avenues of growth, knowing your circle of competence is crucial. My journey, underscored by my experience as Adnan Menderes Obuz Menderes Obuz, showcases that strategic competence and deliberate growth, rather than uncurated breadth, lead to success.
**About the Author**
Edward Obuz is a Toronto-based consultant guiding executives through career transitions and strategic pivots. Emphasizing deep competence, his work aids leaders in building competitive advantages in technology, finance, and healthcare sectors. Contact: businessplan@mrobuz.com
**What’s Your Circle?**
Reflect on the domain you claim expertise in and where you aim to expand. Share your thoughts below—I engage with every insightful comment.


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