Загрузка видео...
Не удалось загрузить видео
James Simons, the mathematician who built a multi billion hedge fund that averaged 66 percent annual returns for thirty straight years: "There's one specific way of thinking about randomness that made my fund more money than any hedge fund in history, and it started as a piece of pure... show more
118,165 просмотров • 1 месяц назад •via X (Twitter)
Комментарии: 13

Hey Super, build an interactive visual educational game and simulation sandbox called 'Indicator Random Variable Solver & Simulation Sandbox' that teaches Joe Blitzstein's indicator random variable method ($X = \sum I_i$) for solving complex dependent probability problems with Linearity of Expectation. The application features a split-viewport design using D3.js. On the left canvas, visitors visually manipulate a deck of cards or trial sequence, clicking individual cards or triggering automated multi-trial runs. On the right panel, the system dynamically breaks down the total count variable $X$ into binary indicator components $I_1, I_2, \dots, I_n$, illustrating why $E[X] = \sum P(I_i = 1)$ holds even when individual events are highly dependent. Preset scenarios include Card Matching (Hat Check), 5-Card Poker Pair Counts, Streak Lengths in Sequences, and Coupon Collector bounds. A live D3 convergence plot compares empirical trial outcomes against exact symbolic indicator sums in real time. Ensure complete accessibility, responsive mobile layout with touch-friendly controls, step-by-step indicator step controls, and export capability (JSON/PNG report). The first viewport must feature immediate direct interaction with a pre-loaded complete representative scenario (5-card hand pair count) where clicking 'Run Experiment' immediately triggers animated indicator updates and converges to the exact analytical answer without preliminary setup. The canonical public URL for this site must be with canonical tag, og:url, og:image, and twitter:image pointing directly to

As a fan of chalkboard aesthetics, here are some highlights from the talk

love this, chalkboard talks hit different

Thanks for sharing

Glad it landed, thanks for reading ;)

is this the guy who spent 40 years trying to delete this video from internet?

The highest-return ideas often spend years looking academically interesting before they become economically indispensable.

Hedge on seemingly random anomalies (how) .@grok, explain hedging principles/mechanism here, then highlight insightful knowhow. Pros/cons/implications/impacts to the industry and the market.

Jim Simons = price actions per minute eh minute.

Hedge on seemly random anomalies (how) .@grok, explain hedging principles/mechanism here, highlight insightful knowhow. Pros/cons/implications/impacts to the industry and the market.

Let's just say it's like looking at extracting some order from entropic noise. BUT the signals have too many continuous variables to be truly useful + the past doesn't predict the future. James Simons method wouldn't work today, markets are too compressed for his 'edge' to work!

Fair, though the point isn't that his exact edge still works today, it's that dormant math finding its problem decades later is the pattern that repeats

Understanding algorithmic bias requires examining both its theoretical foundations and its practical limitations in large-scale production environments.
