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.
Dunning-Kruger Effect 101
In a year when the markets have minted many new self-proclaimed geniuses, it is worth remembering the Dunning-Kruger Effect.
But what is the Dunning-Kruger Effect and how does it work?
Here's Dunning-Kruger Effect 101!
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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.
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."
He hadn't worn a mask.
Instead, he had put lemon juice on his face, believing it would make him invisible to cameras.
Even after he was caught, he was legitimately incredulous that his plan with the lemon juice hadn't worked.
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.
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.
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. https://t.co/gKuHcJTjW7
Cobra Effect 101
— Sahil Bloom (@SahilBloom) October 21, 2020
With the rise of government and central bank intervention in the economy and markets, the term "cobra effect" has experienced a revival.
But what is a "cobra effect" and how does it work?
Here's Cobra Effect 101!
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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!
So how do we avoid it?
Here are a few strategies.
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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.
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.
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. https://t.co/31EZVZDLM1
First Principles 101
— Sahil Bloom (@SahilBloom) November 19, 2020
Many of the world's greatest thinkers and doers - from @naval and @elonmusk to @nntaleb and @chamath - tout the importance of first principles thinking.
But what is "first principles thinking" and how does it work?
Here's First Principles 101!
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Know your competencies, focus on them.
Know your incompetencies, avoid (or outsource) them.
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.
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
For more educational threads on business, money, finance, and economics, follow me on Twitter and check out my meta-thread below. https://t.co/53UhhfzIcp
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!
More from Sahil Bloom
THREAD: With #silversqueeze trending on Twitter, it appears that this week's market spectacle may well be in the silver market.
A perfect moment for a thread on the Hunt Brothers and their alleged attempt to corner the silver market...
1/ First, let's set the stage.
The Hunt Brothers - Nelson Bunker Hunt, William Herbert Hunt, and Lamar Hunt - were the sons of Texas tycoon H.L. Hunt.
H.L. Hunt had amassed a billion-dollar fortune in the oil industry.
He died in 1974 and left that fortune to his family.
2/ After H.L.'s passing, the Hunt Brothers had taken over the family holdings and successfully managed to expand the Hunt empire.
By the late 1970s, the family's fortune was estimated to be ~$5 billion.
In the financial world, the Hunt name was as good as gold (or silver!).
3/ But the 1970s were a turbulent time in America.
Following the oil crisis of the early 1970s, the U.S. had entered a period of stagflation - a dire macroeconomic condition characterized by high inflation, low growth, and high unemployment.
4/ The Hunt Brothers - particularly Nelson Bunker and William Herbert - believed that the inflationary environment would persist and destroy the value of their family's holdings.
To hedge this risk, they turned to silver.
They began buying the metal at ~$3 per ounce in 1973.
A perfect moment for a thread on the Hunt Brothers and their alleged attempt to corner the silver market...
1/ First, let's set the stage.
The Hunt Brothers - Nelson Bunker Hunt, William Herbert Hunt, and Lamar Hunt - were the sons of Texas tycoon H.L. Hunt.
H.L. Hunt had amassed a billion-dollar fortune in the oil industry.
He died in 1974 and left that fortune to his family.
2/ After H.L.'s passing, the Hunt Brothers had taken over the family holdings and successfully managed to expand the Hunt empire.
By the late 1970s, the family's fortune was estimated to be ~$5 billion.
In the financial world, the Hunt name was as good as gold (or silver!).
3/ But the 1970s were a turbulent time in America.
Following the oil crisis of the early 1970s, the U.S. had entered a period of stagflation - a dire macroeconomic condition characterized by high inflation, low growth, and high unemployment.
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!
\U0001f447\U0001f447\U0001f447 pic.twitter.com/at4FmaCmkM
4/ The Hunt Brothers - particularly Nelson Bunker and William Herbert - believed that the inflationary environment would persist and destroy the value of their family's holdings.
To hedge this risk, they turned to silver.
They began buying the metal at ~$3 per ounce in 1973.
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I’m torn on how to approach the idea of luck. I’m the first to admit that I am one of the luckiest people on the planet. To be born into a prosperous American family in 1960 with smart parents is to start life on third base. The odds against my very existence are astronomical.
I’ve always felt that the luckiest people I know had a talent for recognizing circumstances, not of their own making, that were conducive to a favorable outcome and their ability to quickly take advantage of them.
In other words, dumb luck was just that, it required no awareness on the person’s part, whereas “smart” luck involved awareness followed by action before the circumstances changed.
So, was I “lucky” to be born when I was—nothing I had any control over—and that I came of age just as huge databases and computers were advancing to the point where I could use those tools to write “What Works on Wall Street?” Absolutely.
Was I lucky to start my stock market investments near the peak of interest rates which allowed me to spend the majority of my adult life in a falling rate environment? Yup.
Ironies of Luck https://t.co/5BPWGbAxFi
— Morgan Housel (@morganhousel) March 14, 2018
"Luck is the flip side of risk. They are mirrored cousins, driven by the same thing: You are one person in a 7 billion player game, and the accidental impact of other people\u2019s actions can be more consequential than your own."
I’ve always felt that the luckiest people I know had a talent for recognizing circumstances, not of their own making, that were conducive to a favorable outcome and their ability to quickly take advantage of them.
In other words, dumb luck was just that, it required no awareness on the person’s part, whereas “smart” luck involved awareness followed by action before the circumstances changed.
So, was I “lucky” to be born when I was—nothing I had any control over—and that I came of age just as huge databases and computers were advancing to the point where I could use those tools to write “What Works on Wall Street?” Absolutely.
Was I lucky to start my stock market investments near the peak of interest rates which allowed me to spend the majority of my adult life in a falling rate environment? Yup.