1/ First, a few definitions.

The Dunning-Kruger Effect is a cognitive bias in which people with low ability at a given task are prone to overestimate their ability at that task.

Put simply, humans are notoriously incapable of objective evaluation of their competency levels.

2/ The cognitive bias was first identified by psychologists David Dunning and Justin Kruger in a 1999 study.

Their paper, entitled Unskilled and Unaware of It, summarized, "People tend to hold overly favorable views of their abilities in many social and intellectual domains."

3/ The two men had studied the bizarre case of McArthur Wheeler, a 5'6" 270lb bank robber who was swiftly caught after robbing two banks in broad daylight.

He hadn't worn a mask.

Instead, he had put lemon juice on his face, believing it would make him invisible to cameras.

4/ Wheeler was aware that lemon juice was used as invisible ink, so (incorrectly) inferred that it could be used to make himself invisible to security cameras.

Even after he was caught, he was legitimately incredulous that his plan with the lemon juice hadn't worked.

5/ Dunning and Kruger studied whether the least skilled are the most overconfident.

Their finding: the worst performers consistently overestimated their abilities relative to others.

Let's look at a few examples of this bias in action and how you can avoid its pitfalls.

6/ In investing?

As the saying goes, "everyone is a genius in a bull market."

When markets are ripping and your portfolio seems to grow by the day, many fall victim to the Dunning-Kruger Effect.

We may wrongly attribute this performance to our innate talent as investors.

7/ In politics?

With politics, intellectual humility is an aberration, not the norm.

Politicians espouse policy ideas with great confidence even if they have a weak handle of the details.

It's not shocking that we see Cobra Effects in the policy realm.

8/ In business?

Everyone has had that one boss - the know-it-all who actually knows very little.

These bosses (who typically get stuck in middle management) hold back organizations from high performance.

They are easy to spot - we all know who they are.

Beware this boss!

9/ But while we can all rail against the politicians, bosses, or public figures who seem to epitomize the Dunning-Kruger Effect, it is important to recognize that, as humans, we are all prone to this cognitive bias!

So how do we avoid it?

Here are a few strategies.

👇👇👇

10/ Identify your Circle of Competence.

The Circle of Competence is the set of topic areas that align with a person's expertise.

Be ruthless in identifying and protecting the boundaries of your Circle of Competence.

Hint: it's usually smaller than you think.

11/ Get comfortable with, "I don't know."

Most people have an inherent discomfort with saying, "I don't know."

Change that. Embrace what you don't know.

The world would be a much better, more efficient place if we stripped out the fluff and cut to the "I don't know" chase.

12/ Be a first principles thinker.

Think you know something? Challenge yourself, your reasoning, and your assumptions as a matter of practice.

It's uncomfortable, but it is also essential to creating non-linear outcomes.

13/ As Charlie Munger said, "It is remarkable how much long-term advantage people like us have gotten by trying to be consistently not stupid, instead of trying to be very intelligent."

Know your competencies, focus on them.

Know your incompetencies, avoid (or outsource) them.

14/ "It ain’t what you don’t know that gets you into trouble. It’s what you know for sure that just ain’t so."

So the next time you catch yourself marveling at your skill at a task, remember the Dunning-Kruger Effect and the strategies for avoiding it.

15/ That was Dunning-Kruger Effect 101. I hope you found it useful.

For more on this topic, check out the resources below:

https://t.co/5TpIxyWjCD

https://t.co/mYfcPw2rcH

https://t.co/9lmroooQHn

https://t.co/2rlAXpPGt6

https://t.co/sAqJLE1gJi

https://t.co/5vAlRTbi5u

Credits: SahilBloom × VisualizeValue via Twitter

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It's much easier to lose fat when you have a lot of muscle on your frame.

Skinny fat people need to get more weight on the bar and put on more muscle first, instead of doing a cut right away.

-Life Math Money

For those who can't visualize it:

Imagine following two cars:

✅ Toyota Prius with 50 horse power

✅ Mercedes CLS 53 AMG with 500 horse power

Your muscles = horse power

The Mercedes will burn much more even driving slow = while you are resting or sleeping

Tearing someone down is a short term play. Building others up is a long term play.

Surround yourself with people who play the long game.

-Mkobach via Twitter

A perk of fasting regularly for years:

Your mind stops constantly thinking about food, and you can focus more deeply and clearly as a result.

- Orange Book via Twitter