xsmryze

wanna make World better

[xsmryze @xsmryze]

Grace Hopper handed engineers a piece of wire 11.8 inches long and called it a nanosecond. that little wire is why trading firms spend fortunes shaving distance off a cable, and she explained it for free.

11.8 inches is the farthest light travels in a billionth of a second. a microsecond, she showed, is 984 feet of wire. she wanted one hung over every programmer's desk so they would see exactly what they throw away when they waste a microsecond.

latency is not abstract. it has a physical length. get two machines far apart and you are paying for every foot of it.

no theory. one piece of wire you can hold.

a quant I know says this is why his whole desk fights over inches of fiber. the talk is free. almost nobody chasing speed has watched it.

[xsmryze @xsmryze]

https://t.co/jaujj4Vqji

[xsmryze @xsmryze]

$50 an hour, then $500, then $5,000, one man laid out the entire income ladder on a chalkboard and told a room full of people they could climb it as high as they wish. Jim Rohn did it for free.

his point was not luck. it was value. multiply what you are worth to the market by three or five and your income follows. someone, he notes, earned $36 million for one year of work. the ladder is real, the only question is how far up you decide to build.

and you build up, not out. success is not something you chase, it is something you attract by becoming the kind of person it lands on.

no shortcut. no ceiling. one ladder.

a founder I know says this rewired how he thinks about pay. the talk is free. almost nobody underpricing themselves has watched it.

[xsmryze @xsmryze]

https://t.co/jaujj4Vqji

[xsmryze @xsmryze]

To pin the exact price of a $80 stock's forward, a Morgan Stanley quant borrows the money, buys the stock, and shorts the contract, locking a strike of $88.41 with zero uncertainty. Vasily Strela teaches it free at MIT.

it is called a replicating portfolio, and it is the core of risk neutral pricing. build the payoff out of stock and cash, and the price of the derivative can only be one number. any other number, he shows, is free money someone would instantly arbitrage away.

do it for any option, rebalancing as you go, and you are perfectly hedged. the fee is all that is left.

no probability. no drift. one portfolio that copies the payoff.

a quant I know says no arbitrage is the closest thing to a law in finance. the lecture is free. almost nobody who hedges has watched it.

[xsmryze @xsmryze]

https://t.co/jaujj4Vqji

[xsmryze @xsmryze]

Every $2 ticket sends 80 cents straight to the state, so Massachusetts pocketed $10 to $15 million while MIT students ran the expected value math. Jordan Ellenberg explains why nobody got scammed, for free.

before buying a single ticket, one student took the subway to the lottery office and asked if it was legal. they told him to knock himself out. the money did not come from the state, it came from everyone playing on the ordinary days.

the state does not gamble. the state collects taxes. it had accidentally licensed a giant casino and taxed it, 80 cents at a time.

no fraud. no victim. just who understood the math and who did not.

a quant I know says this reframed for him where profit actually comes from. the lecture is free. almost nobody who plays has watched it.

[xsmryze @xsmryze]

https://t.co/jaujj4Vqji

[xsmryze @xsmryze]

One share of Coca-Cola cost $40 at its 1919 IPO, then crashed to $19 within a year. reinvest the dividends and by 1998 that single share was worth about $5 million. Warren Buffett explains why the crash never mattered, for free.

sugar spiked, bottlers rebelled, then came the Depression, a world war, and rationing. there was always a reason not to buy. none of it touched the business. Cola has no taste memory, so people drink five a day and never tire of it, over a billion servings sold daily and still climbing.

get the business right and timing is noise. Buffett figures out what will happen, never when.

no chart. no forecast. one product people never get sick of.

a quant I know says this reframed patience as a strategy, not a mood. the lecture is free. almost nobody chasing the next quarter has watched it.

[xsmryze @xsmryze]

https://t.co/jaujj4Vqji

[xsmryze @xsmryze]

Tell Goldman to buy $100 million and JPMorgan to sell $200 million of the exact same thing, and both say yes, right up until the trade detonates. an ex-Morgan Stanley quant built the system that stops that, and teaches it for free at MIT.

he is James Shepherd of the London Stock Exchange. the whole job is shuffling risk between banks to shrink the margin they must lock away, without ever letting the two sides disagree on what they traded. that one rule, symmetry, is the thing they were most afraid to get wrong.

that same plumbing sits under the entire derivatives market, quietly freeing tens of billions.

no drama. no black box. one constraint.

a quant I know says the boring rules are the ones holding the system up. the lecture is free. almost nobody who trades on it has watched it.

[xsmryze @xsmryze]

https://t.co/jaujj4Vqji

[xsmryze @xsmryze]

Hand someone a $5 mug and they demand $7 to sell it. ask another to buy the same mug and they offer $3. an MIT professor uses that gap to explain trillions in behavior, for free.

he is Jonathan Gruber, an architect of Obamacare. the mug is trivial, but the moment it is yours, giving it up feels like a loss, and losses hurt more than equal gains. that is loss aversion.

it is why people refuse to sell a house below what they paid, why warranties sell, why insurance is a $1.5 trillion industry. your starting point quietly runs your decisions.

no logic. just the pain of letting go.

a quant I know says this bias shows up on every trading desk he has worked. the lecture is free. almost nobody it controls has watched it.

[xsmryze @xsmryze]

https://t.co/jaujj4Vqji

[xsmryze @xsmryze]

Renaissance made $100 billion on trades that barely beat a coin flip. an IIT physicist put the reason on one chalkboard for free: the scatter shrinks as one over the square root of the number of bets.

he is V. Balakrishnan, and the lecture has been free the whole time. flip a fair coin once and anything happens. flip it a million times and the result clamps around the mean, because the relative fluctuation is one over the square root of N.

that is the entire machine. a tiny edge, meaningless on one bet, becomes near certainty over millions. the coin barely beats 50/50. the math does the rest.

no signal. no black box. one formula and a coin.

a quant I know says this taught him why size and repetition beat any single call. the lecture is free. almost nobody who trades has watched it.

[xsmryze @xsmryze]

https://t.co/jaujj4Vqji

[xsmryze @xsmryze]

Mega Millions says $1 billion. an MIT professor shows you are really getting less than half. Jonathan Gruber, an architect of Obamacare, teaches the reason for free.

they do not hand you a billion. they hand you about $33 million a year for 30 years, and future dollars are worth less than today's. so the present value, the number that actually matters, is less than half the number on the sign.

present value equals future dollars over one plus the rate, to the power of the years. every headline salary, every jackpot, every contract shrinks the moment you run it.

no hype. no fine print. one formula.

a quant I know says half the world quotes the big number and none of them discount it. the lecture is free. almost nobody who chases the jackpot has watched it.

[xsmryze @xsmryze]

https://t.co/jaujj4Vqji

[xsmryze @xsmryze]

Whitfield Diffie built the lock that guards trillions in payments, and in the same breath he told you it has an expiry date. the man was Sun's chief security officer, and he gave the warning away for free.

the D in Diffie-Hellman. his public key idea made internet commerce possible: two strangers agree on a secret in the open, listeners left out. simple, elegant, everywhere.

but nothing ever goes away in intelligence. every encrypted message you send is being stored, waiting for quantum computing to open it. the Soviet traffic from the 1940s took until 1978 to crack. yours is in the same queue.

no vault. no army. two numbers and a countdown.

a quant I know says his desk stands on this one idea. the talk is free. so is the clock.

[xsmryze @xsmryze]

https://t.co/jaujj4Vqji

[xsmryze @xsmryze]

John Geanakoplos, Yale professor and founder of a $9 billion hedge fund, gives away the formula that prices all of it for free: price equals dividend over one plus r.

for 3,000 years priests called interest a sin. Fisher showed it was never sin. it was a price. an apple today is a different good from an apple next year, and the real rate is just the ratio between them.

know that one rate and the whole market unfolds. a stock is worth its future dividend divided by one plus the real rate. the Fundamental Theorem of Asset Pricing.

no just price. no just rate. one equation.

a quant I know says this taught him finance better than his degree. the lecture is free. almost nobody who trades on it has watched it.

[xsmryze @xsmryze]

https://t.co/jaujj4Vqji

[xsmryze @xsmryze]

https://t.co/jaujj4Vqji

[xsmryze @xsmryze]

Krishna Jagannathan asked one question about a random line on a circle and got three different correct answers. every trading model on Wall Street lives or dies on which one you pick

he is an IIT Madras professor, and this lecture is free on YouTube. draw a chord at random, ask if it's longer than the triangle's side. one says 1/4. one says 1/3. one says 1/2. no mistakes, no cheating. all three are right

that is Bertrand's paradox, and it is the trap under every "probability" a quant charges you $500,000 for. the number is meaningless until you define the sample space. skip that step and your model is just three answers pretending to be one

no slides. no hype. one circle and a chord

a quant I know says this single example taught him more caution than his entire degree. the lecture is free. almost nobody who bets money has watched it

[xsmryze @xsmryze]

Whitfield Diffie solved a problem as old as secrecy at Stanford in 1975 and gave it away for free. every bank login, every card swipe, every wallet you own runs on it

he is the D in Diffie-Hellman, 2015 Turing Award. two strangers, on a wire everyone can hear, agree on a secret nobody else can compute. for all of history you had to meet first and hand it over. couriers. vaults. a phone so secret it weighed 30 tons and only Churchill and Roosevelt could afford one. Diffie killed all of it

that same handshake sits on every SWIFT transfer, every checkout, every login. trillions rest on it. one man in a lecture hall handed it over

no vault. no courier. two strangers and a wire

he already told you it has an expiry date: quantum. the lecture is free. so is the countdown

[Di Krass @Di_Krass_]

https://t.co/VG8RsppBKq

[xsmryze @xsmryze]

@froessell really stylish

[xsmryze @xsmryze]

@genneelcool @SeismicSys @SeismicsysUA Nice👍

[xsmryze @xsmryze]

@genneelcool @PrismaXai @castorhat Good ,so nice 🧊

[xsmryze @xsmryze]

@genneelcool @PrismaXai @castorhat Cappucino ☕️ What about you?🧋

[xsmryze @xsmryze]

@genneelcool Crypto top🎉

[xsmryze @xsmryze]

@genneelcool good night🔥