Kaien @kaienphase

Harvard’s endowment has to clear 8% every year or the institution starts to shrink. That number is not optional. It is the floor required to cover spending and inflation without eating the principal. Almost half the operating budget rides on the performance of one portfolio. Jake Xia manages the public markets portion of that portfolio. He also teaches the underlying mathematics at MIT and posts the lectures for free. Millions have watched. Almost none of them adjusted how they actually allocate capital. In class he gives students a blank sheet and tells them to construct a portfolio. The answers arrive instantly: concentrated bets on single stocks, exotic assets, confident narratives. The one question that never appears is the only one that determines the outcome, how much weight each position receives. Selection is the easy part. Sizing is the entire game. The framework that solves it is the efficient frontier, a result that earned a Nobel Prize. Xia draws the curve in less than a minute. Underneath it sit five permanent equations: compound growth, present value, geometric mean, the Rule of 72, and real return. None of them are new. None of them require a Bloomberg terminal. All of them fit on a single napkin. A bond yielding 5% while inflation runs at 4% delivers a 1% real return. The industry does not conceal the arithmetic. It simply relies on the fact that most people never perform it. The lectures remain free. The math remains free. The only expensive part is continuing to ignore both.

Kaien @kaienphase

6 days ago

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A Nobel laureate walked into a Yale classroom in 2008 and explained why finance is a pillar of civilized society. for free. Most of the industry still treats the lecture like it never happened. Robert Shiller does not open with valuation models or trading tactics. He opens with the actual job of finance: moving limited resources across space and time so people can take on the big risks that matter. Insurance, banking, securities, real estate, all of it exists to manage uncertainty so enterprise can happen at scale. He asks the question almost nobody in the room expects: is studying this moral? Then he answers it without flinching. The same tools that create wealth can also concentrate it. The difference is what you do with the power once you understand the machine. Business schools charge six figures for frameworks that start several layers downstream of this lecture. Shiller starts at the foundation and works outward, behavioral bias, financial technology, the institutions that either stabilize or amplify crises. The subprime machine was already visible when he recorded this. He did not need hindsight. He just refused to treat the system as neutral.

Kaien @kaienphase

6 days ago

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A 94-year-old math theorem explains why the richest people on earth almost went to zero and still came back. for free. Almost nobody treats it as the operating rule it actually is. Ramsey proved in 1930 that any system large enough is forced to contain order. You cannot keep randomness alive past a certain scale. The math does not allow it. Jake Xia teaches the proof at MIT between managing Harvard’s public markets. Color every edge of a graph red or blue. Once the graph gets big enough, a single-color cluster must appear. Not because anyone planned it. Because chaos eventually runs out of room. Zuckerberg watched Meta fall 76%. Jobs was fired from his own company. Huang sold chips nobody wanted for a decade. Bezos saw Amazon drop 90% after the crash. Every one of them stayed inside the system long enough for the pattern to form. The ones who quit never saw the cluster. The ones who went broke could not stay long enough for it to appear. Same theorem. Same constraint. Talent is optional. Survival is not. Stay in the graph. Do not hit zero. The order was always going to show up. Almost nobody lasts long enough to watch it form. The lecture is free. The theorem is older than everyone still trading.

Kaien @kaienphase

6 days ago

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A hedge-fund manager who returned 50% a year for a decade walked into a Columbia classroom in 2005 and taught the entire method to thirty students. for free. Almost no one in finance has ever promoted the recording. Joel Greenblatt ran Gotham Capital from 1985 to 1994. Sustaining that kind of return for even one year is rare. He did it for ten, then returned outside capital and kept only his own money. A few years later he sat on a desk and explained exactly how it was done. He does not teach a formula or a screener. He teaches the corners of the market where the usual buyers are forced to sell for structural reasons that have nothing to do with price: spinoffs, restructurings, index deletions. Situations where the seller is not trying to get the best price. He shows why these corners keep appearing even after everyone knows they exist. Columbia charges tens of thousands a year in tuition. The man who actually generated the returns gave the method away in one room with one camera and uneven audio. The uncomfortable part is what he says about concentration. He held very few positions. It runs directly against the diversification dogma taught two floors down. Every filing is free now. Every screener is free. The edge was never more information. It was knowing which information to ignore.

Kaien @kaienphase

6 days ago

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A billionaire sat in front of a room of students in 1998 and explained how to get rich without ever needing to predict the market. Most of Wall Street spent the next twenty-five years overcomplicating the same lesson. Warren Buffett walked through the only principles that actually compound: buy wonderful businesses you understand, pay a fair price, and let time do the rest. No macro forecasts. No complex models. No need to be right about the next quarter. He used See’s Candy to show why pricing power beats growth stories. He explained why the biggest mistakes are the ones you never make — the opportunities you understand but still pass on. He told the room that diversification is protection for people who do not know what they are doing, and concentration is the only path once you do. MBA programs still charge six figures to teach watered-down versions of the same ideas. Buffett gave them away in a single afternoon with no slides and no product to sell. A portfolio manager I know makes every new analyst watch this lecture before they touch a single position. Not the internal training. Not the CFA material. This one. Millions have seen it. Almost none of them can still recite the two or three rules he treated as non-negotiable.

Kaien @kaienphase

6 days ago

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A billionaire walked up to a whiteboard and explained the entire economy in 42 minutes. for free. Wall Street spent the next decade pretending the recording did not exist. Ray Dalio drew three forces that govern every boom, every crash, and every rate decision since 1929. Short-term debt cycle. Long-term debt cycle. Productivity. Politics as the force that turns the machine. MBA programs still charge two hundred thousand dollars for frameworks he gave away in the first fifteen minutes. Several of the models he sketched that day remain proprietary inside major banks. He put them on YouTube with no paywall and no fund pitch. He also mapped the zero-rate wall and the money printer two years before 2020 forced them into the open. The lines on the board were not a prediction. They were the arithmetic of a cycle reaching its limit. A portfolio manager at a top-five firm told me every new analyst is required to watch this lecture before they open a terminal. Not the internal training. Not the CFA material. This one. Forty million people have seen it. Almost none of them can still name the three forces he drew in the opening ten minutes. The lecture is still free.

Kaien @kaienphase

6 days ago

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feynman explaining this from his living room is still underrated.

Feynman sat in his living room and turned the solid world into a swarm of jiggling atoms. The BBC filmed him at home in 1983. No stage, no slides, no equations on a board. Just a Nobel laureate getting a kick out of explaining why fire is atoms snapping together, why rubber bands pull, why magnets refuse to touch, and why the mirror does not reverse left and right the way everyone thinks. He keeps coming back to the same point: the world you touch is a temporary pattern in a sea of ceaseless motion. Look close enough and the solid table dissolves into emptiness and vibration. Look far enough and the same emptiness rules the galaxies. Most people watch the hour and walk away smiling at the stories. Almost no one notices what the stories quietly remove. There is no absolute stage. Properties do not sit inside objects waiting to be found. Separateness itself fails under entanglement. Spacetime may be only an approximation that appears later. Feynman made the classical picture feel like a useful fiction of middle scales. The equations finished the job decades earlier.

Kaien @kaienphase

2 weeks ago

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Richard Feynman, Cornell 1964: the inverse-square law that runs from falling apples to galaxies. Feynman stood in a Cornell lecture hall in 1964 and spent fifty-five minutes showing why the law of gravitation is both the purest and the most incomplete statement physics has ever made. One sentence. Every mass attracts every other mass with a force proportional to the product of the masses and inversely proportional to the square of the distance. That single rule accounts for falling apples, planetary orbits, tides, the shape of the Earth, and the motion of galaxies a hundred thousand light-years across. He walks through Kepler, Newton, Cavendish, the prediction of Neptune, the residual anomaly of Mercury. He laughs at the idea of angels pushing planets, then admits the origin of inertia is still almost as mysterious. The ratio between gravity and electromagnetism is a forty-two-digit number that matches the size of the universe to the size of a proton. No one knows why. The lecture is free. Most people who watch it treat it as beautiful history. Almost no one notices what it quietly assumes: absolute space, definite forces acting between independent objects, a stage that exists whether anyone looks or not. That stage is the part twentieth-century physics removed. There is no universal “now.” Properties do not fully exist until interaction forces them. Entanglement dissolves separateness. Spacetime itself may be only an approximation that appears later.

Kaien @kaienphase

2 weeks ago

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MIT Professor Revealed the Secret to Making an Idea Impossible to Ignore Almost none of them have absorbed the idea that actually matters. His name was Patrick Winston. He ran the MIT AI Lab for twenty-five years and delivered the same one-hour lecture every January for four decades. He filmed the final version in 2018 and died eighteen months later. The lecture is free. Executive coaches still charge five figures to teach a third of what he covered. Winston’s entire framework fits on a napkin: start with a promise, cycle the idea, keep the images clean, end with a line the audience can repeat at dinner. Never open with a joke. Never end with “thank you.” He believed success is determined by the ability to speak, the ability to write, and the quality of the ideas in that order. The quality of the classical idea of reality is the one that failed. There is no universal “now.” Properties do not fully exist until interaction forces them. Entanglement dissolves the illusion of separateness. Spacetime itself may be only an approximation that appears later. Most people still speak as if the old picture remains fundamental. The equations have been saying otherwise for a century. Winston spent fifty years teaching people how to make ideas stick. The idea that still has not stuck is that the classical floor was removed.

Kaien @kaienphase

2 weeks ago

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