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In this video, Charlie Munger, the billionaire vice chairman of Berkshire Hathaway, shares his insights on how inverting his problems has helped him succeed in life. Munger is a known contrarian investor, and his approach to problem-solving is no exception. He believes that by looking at problems from the opposite perspective, you can often find more creative and effective solutions.
Munger's advice is valuable for anyone who wants to be more successful in life. By inverting your problems, you can often find more creative and effective solutions. This approach can be applied to all areas of life, from business to personal relationships.
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Charlie Munger argues that financial and professional success comes not from exceptional intelligence but from mastering a small set of reusable mental tricks—particularly inversion, dimensional thinking, and understanding fundamentals—which enable ordinary people to achieve extraordinary results by avoiding predictable mistakes and cutting through unnecessary complexity.
- Inversion (thinking backwards about what would cause failure) solves problems that forward thinking cannot
- Adding dimensional depth to analysis (moving from 2D to 3D thinking) reveals solutions missed by conventional approaches
- Understanding business fundamentals and core advantages eliminates need for excessive due diligence and allows rapid decision-making
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Inversion—thinking through problems backward from failure modes—is a foundational trick that solves problems more easily than forward thinking, exemplified by asking 'how can I kill these pilots' to avoid killing them rather than asking how to keep them safe
“I invert all the time”
Inversion—thinking backwards about what would cause failure—is a practical mental trick that solves problems easily, whereas forward thinking cannot solve them easily, making it analogous to solving algebra problems by inverting them
“I invert all the time”
Geometric and real-world problems are three-dimensional by nature; being conscious of this geometrical rule and thinking in three dimensions is a basic insight that many people miss because they don't consciously engage with spatial fundamentals
“are you conscious that a geometrical problem in a real world is three-dimensional are you conscious of the rules or are they're just there well it's so habitual with yeah I understand that and I revolve possibilities and I rag problems hard”
A professional appraiser made a critical error in valuing an easement by thinking only in two dimensions (comparable sales per acre) rather than three dimensions (the actual 3D impact of infrastructure on land development), leading to a $125,000 valuation instead of the correct $600,000
“he thought the problem through in two dimensions and he figured out from comparable sales what the value per acre was and he computed the acreage and he had something a little bit on the on the damage the easement would do to the remaining property and so but it's all done in two dimensions”
Financial success does not require extreme intelligence or prodigy-level ability; rather, it comes from learning and applying a small set of basic tricks learned from mentors like his grandfather
“what caused the financial success was not extreme Mobility you know I have a good mind but I I'm way short of Prodigy and I've had results in life that are prodigious and that came from tricks I just learned a few basic tricks from people like my grandfather”
If you are 96% confident in a decision, that level of certainty is all you are entitled to in many cases; excessive due diligence beyond that point is a sign of weak thinking and insecurity rather than prudence
“you don't need perfect if you're 96% sure that's all you're entitled to in many cases”
The ROTC taught a mental trick of firing shells one shot over, one shot short, then 'kapow'—bracketing the target—which Munger has applied throughout his life to determine optimal sizing decisions
“I been to the ROTC both in high school and college and the irtc taught me to fire mortar shells or shells one shot over one shot short and then kapow well I never shot any damn shells but I've been using that metal trick all my life that's why how I determine what size to make something over and under and kapow”
Financial success does not require extreme intelligence or prodigy-level ability; rather, it comes from learning a few basic tricks that enable non-prodigy people to achieve prodigious results
“what caused the financial success was not extreme Mobility you know I have a good mind but I I'm way short of Prodigy and I've had results in life that are prodigious and that came from tricks I just learned a few basic tricks from people like my grandfather”
You don't need perfect information to act; being 96% sure is 'all you're entitled to' in many cases, and excessive due diligence is often a sign of weak thinking and insecurity rather than prudence
“you don't need perfect if you're 96% sure that's all you're entitled to in many cases and I see these people doing this due diligence and the weaker they are as thinkers the more due diligence they do and of course it's just a way of laying an inner insecurity and of course it doesn't work”
A real estate appraiser was valuing a ranch easement incorrectly at $125,000 because he thought the problem through in only two dimensions (comparable sales per acre times acreage), missing the three-dimensional reality that utility towers would freeze the grade and prevent the optimal three-dimensional development of hilly land (removing hilltops and filling valleys)
“what he had done is what he was taught to do an appraisal school he thought the problem through in two dimensions and he figured out from comparable sales what the value per acre was and he computed the acreage”
People who are mentally insecure should not be in positions of decision-making authority
“I don't think people are that insecure mentally ought to be in positions of decision making”
Inversion applied to broad institutional or policy problems—such as asking 'what could I do which most easily hurt India' rather than 'how can I help India'—produces better results by revealing vulnerabilities and their solutions
“most people say how can you please tell us what you do to save India or to help India and of course I would approach it differently I'd say what could I do which most easily hurt India and approaching it in reverse that way I got better results”
Professional experts who don't pay attention to fundamentals and instead rely solely on trained procedures are unreliable, and the simple mental trick of constantly returning to basics is a powerful advantage over such experts
“people like that appraiser who didn't know his own business very well because he didn't pay attention to the fundamentals those people are always with us and if you just have the mental trick of constantly going back to the basics it's pretty basic Insight”
Applying the grandfather's wisdom of 'swim as long as you want but stay near the shore' to business and life means identifying risks on the other side of situations and avoiding them, which is a discipline of looking at vulnerabilities
“you look at the vulnerabilities”
Munger's grandfather taught him to 'swim as long as you want but stay near the shore'—a principle about managing risk by maintaining the ability to retreat to safety
“my grandfather would say to him when I'm swimming he'd say swim as long as you want but stay near the shore”
The problem with leverage buyout firms and lawyers doing excessive due diligence—such as reviewing all purchasing orders at companies like Costco—is that they don't actually need that granular data to understand whether the business is good
“in America now they do these leverage buyouts and these firms do what they call do diligence and they will send armies of young lawyers out at high rates per hour Riv through all the purchasing orders at a place like ezri don't even think about it”
Leverage buyout firms spend enormous resources on due diligence (armies of young lawyers charging high hourly rates reviewing purchasing orders) on companies like EZy, but this is unnecessary because you don't need to examine purchasing orders to understand whether a company is fundamentally good
“in America now they do these leverage buyouts and these firms do what they call do diligence and they will send armies of young lawyers out at high rates per hour Riv through all the purchasing orders at a place like ezri don't even think about it”
The ROTC (Reserve Officers' Training Corps) taught Munger the mortar-shell technique of firing one shot over and one shot short to bracket the target, which he has applied as a mental trick throughout his life to determine what size to make things (over and under and kapow)
“I had that trick very early and I have a whole bag of tricks like that I been to the ROTC both in high school and college and the irtc taught me to fire mortar shells or shells one shot over one shot short and then kapow well I never shot any damn shells but I've been using that metal trick all my life that's why how I determine what size to make something over and under and kapow”
By correcting the appraiser's two-dimensional thinking to three-dimensional analysis, Munger was able to increase the client's settlement from the Edison Company from $125,000 to $600,000—an outcome that was 'not at all hard' because Edison's honest engineers also thought in three dimensions
“I said to my elderly client I think you have to fire this twit and I will hire you an appraiser who can think and so I got him $600,000 which wasn't at all hard because I was dealing with a bunch of honest engineers at the Edison who did think in three dimensions”
Munger was able to make a major acquisition of an Exxon Darko (large oil company) stock investment in approximately two days by using his 'bag of tricks' rather than extensive due diligence, with minimal research beyond understanding basic business fundamentals
“you didn't do all the analytics and you didn't do all of the research but you used your bag of tricks and you flew out to Omaha you and Warren spent the weekend you called up the president of the bank America got the money made the deal”
People with mental insecurity should not be in positions of decision-making, as their insecurity leads them to do excessive due diligence that doesn't work and interferes with sound judgment
“I don't think people are that insecure mentally ought to be in positions of decision making”
When weather forecasting for military pilots, there are only two ways to kill a pilot: getting him into icing his plane cannot handle, or getting him to a location where he runs out of gas before landing due to all airports being closed; by being fanatic about avoiding these two hazards, one prevents pilot deaths
“I said there are only two ways I'm ever going to I was in the ferry command there only two ways I'm going to kill pilot is I'm going to get him into icing his plane can't handle and that will kill him or I'm going to get him someplace where he's going to run out of gas before he can land because all the airports are sucked in and I just was fanatic about avoiding those two hazards”
Munger's collection of basic tricks enables a non-prodigy to achieve prodigy-level results
“this is just a bag of tricks and it enables a non- predigest man to get predigest results”
Many lawyers make mistakes with problems like the Edison easement case because they don't pay attention to fundamentals; people like the appraiser who don't know their own business well are 'always with us,' but the mental trick of constantly going back to basics provides a significant advantage
“people like that appraiser who didn't know his own business very well because he didn't pay attention to the fundamentals those people are always with us and if you just have the mental trick of constantly going back to the basics it's pretty basic Insight”
The Permian Basin is America's number one oil reservoir with no comparable alternative, and Permian Basin oil investments with preferred stock status, preferred dividends of 8%, and management by talented production engineers who outperform competitors in shale are 'no-brainer' investments that do not require extensive due diligence
“it's perfectly obvious the perian Basin is our number one oil reservoir and we don't have another like it and it's perfectly obvious you have a preferred stock that you have an advantage over everybody else and plus an upside”
The Permian Basin is America's number one oil reservoir and has no comparable peer, and investment in a preferred stock with 8% dividend from a company run by skilled production engineers with superior shale results is obvious and not difficult to evaluate
“the perian Basin is our number one oil reservoir and we don't have another like it”
Munger's mental process for difficult problems is habitual and involves revolvinging possibilities and 'ragging problems hard', and if they don't yield, returning to the problem with fresh perspective
“it's so habitual with yeah I understand that and I revolve possibilities and I rag problems hard and if they don't yield I come back”
Munger and Warren Buffett have worked together so long that they can communicate volumes with minimal words ('just one grunt'), making due diligence on joint decisions quick because they already share deep understanding of the fundamentals
“Warren and I have been together so long that just one grunt we can speak a volume”
Kobe Bryant's death in a helicopter crash was stupid and avoidable through the kind of risk-avoidance discipline that Munger's grandfather taught him—staying near the shore while swimming, or in this case, avoiding unnecessary risks
“if Kobe Bryant had had somebody like me he'd still be with us it was so stupid to kill kill yourself that way”
Munger and Buffett have such a long-standing relationship that they can communicate with just 'one grunt' and speak volumes to each other, enabling rapid decision-making without extensive discussion
“Warren and I have been together so long that just one grunt we can speak a volume”